Case Study GPT Full Stack Development

I want to build a full stack web application using brython, bootstrap, flask, and sqlalchemy. Please help me write the code for the project, step by step. The application will be a multi-user contact database system that enables contact sharing between users. For the first step, we'll need to build the login page, some database schema to hold user information, and the authorization routines. Please create a front end form for the user to log in, with text fields for email and password (password should be hidden from view, with asterisks). Please add a link to create a new account, and a link to handle 'forgot password'. On the back-end, we'll need to store user account information in the database, and have functions to handle new sign-ups and forgotten passwords. Both those routines should send the user an email with confirmation links which lead to front-end forms to enable the signup and forgotten password routines.

Great! Let's start building the full-stack web application step by step. We'll use Brython for the front-end, Bootstrap for styling, Flask for the back-end, and SQLAlchemy for the database.

Step 1: Project Structure
First, let's create a basic project structure:

contact_app/
│
├── app/
│ ├── __init__.py
│ ├── models.py
│ ├── routes.py
│ ├── templates/
│ │ ├── base.html
│ │ ├── login.html
│ │ ├── signup.html
│ │ ├── forgot_password.html
│ └── static/
│ └── js/
│ └── login.js
├── config.py
├── run.py
├── requirements.txt
Step 2: Setting Up Flask and SQLAlchemy
run.py
This file will start the Flask application.

from app import create_app

app = create_app()

if __name__ == "__main__":
app.run(debug=True)
config.py
This file will hold the configuration settings for the Flask app.

import os

class Config:
SECRET_KEY = os.environ.get('SECRET_KEY') or 'you-will-never-guess'
SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL') or 'sqlite:///site.db'
SQLALCHEMY_TRACK_MODIFICATIONS = False
MAIL_SERVER = 'smtp.googlemail.com'
MAIL_PORT = 587
MAIL_USE_TLS = True
MAIL_USERNAME = os.environ.get('EMAIL_USER')
MAIL_PASSWORD = os.environ.get('EMAIL_PASS')
app/__init__.py
This file initializes the Flask app, SQLAlchemy, and the mail extension.

from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_mail import Mail
from config import Config

db = SQLAlchemy()
mail = Mail()

def create_app(config_class=Config):
app = Flask(__name__)
app.config.from_object(config_class)

db.init_app(app)
mail.init_app(app)

from app.routes import main
app.register_blueprint(main)

return app
app/models.py
This file defines the User model for the database.

from datetime import datetime
from app import db

class User(db.Model):
id = db.Column(db.Integer, primary_key=True)
email = db.Column(db.String(120), unique=True, nullable=False)
password = db.Column(db.String(60), nullable=False)
created_at = db.Column(db.DateTime, nullable=False, default=datetime.utcnow)
app/routes.py
This file defines the routes for the login, signup, and password reset functionality.

from flask import Blueprint, render_template, url_for, flash, redirect
from app import db, mail
from app.models import User

main = Blueprint('main', __name__)

@main.route('/')
def home():
return render_template('login.html')

@main.route('/login')
def login():
return render_template('login.html')

@main.route('/signup')
def signup():
return render_template('signup.html')

@main.route('/forgot_password')
def forgot_password():
return render_template('forgot_password.html')
Step 3: Front-End Templates and Scripts
app/templates/base.html
This file will serve as the base template for the application.

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Contact App</title>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
{% block content %}{% endblock %}
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/brython/3.9.5/brython.min.js"></script>
<script src="{{ url_for('static', filename='js/login.js') }}"></script>
</body>
</html>
app/templates/login.html
This file will be the login page template.

{% extends "base.html" %}

{% block content %}
<h2>Login</h2>
<form id="login-form" action="" method="post" onsubmit="return false;">
<div class="form-group">
<label for="email">Email address</label>
<input type="email" class="form-control" id="email" placeholder="Enter email">
</div>
<div class="form-group">
<label for="password">Password</label>
<input type="password" class="form-control" id="password" placeholder="Password">
</div>
<button type="submit" class="btn btn-primary">Login</button>
<a href="{{ url_for('main.signup') }}" class="btn btn-link">Create a new account</a>
<a href="{{ url_for('main.forgot_password') }}" class="btn btn-link">Forgot password?</a>
</form>
{% endblock %}
app/templates/signup.html
This file will be the signup page template.

{% extends "base.html" %}

{% block content %}
<h2>Sign Up</h2>
<form id="signup-form" action="" method="post" onsubmit="return false;">
<div class="form-group">
<label for="email">Email address</label>
<input type="email" class="form-control" id="email" placeholder="Enter email">
</div>
<div class="form-group">
<label for="password">Password</label>
<input type="password" class="form-control" id="password" placeholder="Password">
</div>
<button type="submit" class="btn btn-primary">Sign Up</button>
</form>
{% endblock %}
app/templates/forgot_password.html
This file will be the forgot password page template.

{% extends "base.html" %}

{% block content %}
<h2>Forgot Password</h2>
<form id="forgot-password-form" action="" method="post" onsubmit="return false;">
<div class="form-group">
<label for="email">Email address</label>
<input type="email" class="form-control" id="email" placeholder="Enter email">
</div>
<button type="submit" class="btn btn-primary">Send Reset Link</button>
</form>
{% endblock %}
app/static/js/login.js
This file will handle the front-end logic using Brython.

from browser import document, alert, ajax

def send_login_request(event):
email = document["email"].value
password = document["password"].value

req = ajax.ajax()
req.open("POST", "/api/login", True)
req.set_header("Content-Type", "application/json")
req.send({"email": email, "password": password})

def on_complete(req):
if req.status == 200:
alert("Login successful!")
else:
alert("Login failed!")

req.bind("complete", on_complete)

document["login-form"].bind("submit", send_login_request)
Step 4: Creating the Database and Email Handlers
We'll need to implement functions to handle new sign-ups and forgotten passwords on the back-end.

app/routes.py (updated)
Adding API routes for login, signup, and password reset.

from flask import request, jsonify
from flask_mail import Message
from app import db, mail

@main.route('/api/signup', methods=['POST'])
def api_signup():
data = request.get_json()
user = User(email=data['email'], password=data['password'])
db.session.add(user)
db.session.commit()

msg = Message('Account Confirmation', sender='noreply@demo.com', recipients=[user.email])
msg.body = 'Click the link to confirm your account: http://localhost:5000/confirm_account'
mail.send(msg)

return jsonify({"message": "User registered successfully!"}), 201

@main.route('/api/forgot_password', methods=['POST'])
def api_forgot_password():
data = request.get_json()
user = User.query.filter_by(email=data['email']).first()
if user:
msg = Message('Password Reset Request', sender='noreply@demo.com', recipients=[user.email])
msg.body = 'Click the link to reset your password: http://localhost:5000/reset_password'
mail.send(msg)
return jsonify({"message": "If that email address exists in our system, a reset link has been sent!"}), 200
Step 5: Database Initialization
To initialize the database, run the following commands in your terminal:

$ flask shell
>>> from app import db
>>> db.create_all()
Step 6: Install Dependencies
Create a requirements.txt file with the following content:

Flask==2.0.1
Flask-SQLAlchemy==2.5.1
Flask-Mail==0.9.1
Then install the dependencies using:

$ pip install -r requirements.txt
Step 7: Run the Application
Start the Flask application:

$ python run.py
Now you have a basic full-stack web application with user login, sign-up, and password reset functionalities. You can expand on this foundation by adding more features and enhancing security measures as needed.

The error you're encountering is due to a compatibility issue between Flask and the Werkzeug library versions. This can be resolved by ensuring that you have compatible versions of Flask and Werkzeug.

Here’s how you can fix this:

Uninstall the current versions of Flask and Werkzeug:

pip uninstall flask werkzeug
Install compatible versions:

You can specify compatible versions of Flask and Werkzeug by creating a requirements.txt file or directly installing the specific versions. Based on the error, a compatible combination is Flask 2.0.1 and Werkzeug 2.0.1.

pip install flask==2.0.1 werkzeug==2.0.1
Alternatively, you can update your requirements.txt to:

Flask==2.0.1
Werkzeug==2.0.1
Flask-SQLAlchemy==2.5.1
Flask-Mail==0.9.1
Then, install the dependencies using:

pip install -r requirements.txt
Try initializing the database again:

flask shell
Then, in the Flask shell, run:

from app import db
db.create_all()
This should resolve the issue and allow you to initialize your database without errors. If you continue to face issues, please let me know, and we can further troubleshoot.

C:\Users\nick\Downloads\contact_app>flask shell
Traceback (most recent call last):
File "<frozen runpy>", line 198, in _run_module_as_main
File "<frozen runpy>", line 88, in _run_code
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Scripts\flask.exe\__main__.py", line 7, in <module>
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\cli.py", line 990, in main
cli.main(args=sys.argv[1:])
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\cli.py", line 596, in main
return super().main(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\click\core.py", line 1078, in main
rv = self.invoke(ctx)
^^^^^^^^^^^^^^^^
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\click\core.py", line 1688, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\click\core.py", line 1434, in invoke
return ctx.invoke(self.callback, **ctx.params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\click\core.py", line 783, in invoke
return __callback(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\click\decorators.py", line 33, in new_func
return f(get_current_context(), *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\cli.py", line 439, in decorator
with __ctx.ensure_object(ScriptInfo).load_app().app_context():
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\cli.py", line 406, in load_app
app = locate_app(self, import_name, None, raise_if_not_found=False)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\cli.py", line 273, in locate_app
return find_best_app(script_info, module)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\cli.py", line 68, in find_best_app
app = call_factory(script_info, app_factory)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\cli.py", line 119, in call_factory
return app_factory(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\nick\Downloads\contact_app\app\__init__.py", line 16, in create_app
from app.routes import main
File "C:\Users\nick\Downloads\contact_app\app\routes.py", line 5, in <module>
@main.route('/api/login', methods=['POST'])
^^^^
NameError: name 'main' is not defined. Did you mean: 'mail'?

C:\Users\nick\Downloads\contact_app>

The error indicates that the main blueprint is not defined when trying to use it in routes.py. This issue arises because the main blueprint needs to be imported and registered correctly.

Let's correct the code step by step.

Step 1: Define the Blueprint
app/routes.py
Ensure that the blueprint is defined before using it.

from flask import Blueprint, render_template, request, jsonify, flash, redirect, url_for
from flask_mail import Message
from app import db, mail
from app.models import User

main = Blueprint('main', __name__)

@main.route('/')
def home():
return render_template('login.html')

@main.route('/login')
def login():
return render_template('login.html')

@main.route('/signup')
def signup():
return render_template('signup.html')

@main.route('/forgot_password')
def forgot_password():
return render_template('forgot_password.html')

@main.route('/api/signup', methods=['POST'])
def api_signup():
data = request.get_json()
user = User(email=data['email'], password=data['password'])
db.session.add(user)
db.session.commit()

msg = Message('Account Confirmation', sender='noreply@demo.com', recipients=[user.email])
msg.body = 'Click the link to confirm your account: http://localhost:5000/confirm_account'
mail.send(msg)

return jsonify({"message": "User registered successfully!"}), 201

@main.route('/api/forgot_password', methods=['POST'])
def api_forgot_password():
data = request.get_json()
user = User.query.filter_by(email=data['email']).first()
if user:
msg = Message('Password Reset Request', sender='noreply@demo.com', recipients=[user.email])
msg.body = 'Click the link to reset your password: http://localhost:5000/reset_password'
mail.send(msg)
return jsonify({"message": "If that email address exists in our system, a reset link has been sent!"}), 200
Step 2: Register the Blueprint
app/__init__.py
Ensure that the blueprint is registered correctly in the application factory.

from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_mail import Mail
from config import Config

db = SQLAlchemy()
mail = Mail()

def create_app(config_class=Config):
app = Flask(__name__)
app.config.from_object(config_class)

db.init_app(app)
mail.init_app(app)

from app.routes import main
app.register_blueprint(main)

return app
Step 3: Run the Application
Ensure all required dependencies are installed, and then try running the application again.

Initialize the database:

flask shell
In the Flask shell:

from app import db
db.create_all()
Run the application:

python run.py
This should resolve the issue and allow you to initialize your database without errors. If you continue to face issues, please let me know, and we can further troubleshoot.

I'm getting the login screen, and when I click 'create new account', that form opens correctly, but when I fill in a new email address and password, then click the sign up button, nothing happens.

It looks like the signup form is not submitting data to the server. Let's check the JavaScript for the signup form to ensure it sends the data correctly using Brython.

We'll update the JavaScript to handle the signup form submission, similar to the login form.

Step 1: Update JavaScript for Signup Form
app/static/js/login.js
Add the following code to handle the signup form submission:

from browser import document, alert, ajax

def send_request(url, data, success_message):
req = ajax.ajax()
req.open("POST", url, True)
req.set_header("Content-Type", "application/json")
req.send(data)

def on_complete(req):
if req.status == 200 or req.status == 201:
alert(success_message)
else:
alert(f"Request failed: {req.status} - {req.text}")

req.bind("complete", on_complete)

def send_login_request(event):
email = document["email"].value
password = document["password"].value
data = {"email": email, "password": password}
send_request("/api/login", data, "Login successful!")

def send_signup_request(event):
email = document["email"].value
password = document["password"].value
data = {"email": email, "password": password}
send_request("/api/signup", data, "Sign up successful! Please check your email to confirm your account.")

def send_forgot_password_request(event):
email = document["email"].value
data = {"email": email}
send_request("/api/forgot_password", data, "If that email address exists in our system, a reset link has been sent!")

document["login-form"].bind("submit", send_login_request)
document["signup-form"].bind("submit", send_signup_request)
document["forgot-password-form"].bind("submit", send_forgot_password_request)
Step 2: Update Signup Template
Ensure the signup form has the correct ID to bind the event handler.

app/templates/signup.html
{% extends "base.html" %}

{% block content %}
<h2>Sign Up</h2>
<form id="signup-form" action="" method="post" onsubmit="return false;">
<div class="form-group">
<label for="email">Email address</label>
<input type="email" class="form-control" id="email" placeholder="Enter email">
</div>
<div class="form-group">
<label for="password">Password</label>
<input type="password" class="form-control" id="password" placeholder="Password">
</div>
<button type="submit" class="btn btn-primary">Sign Up</button>
</form>
{% endblock %}
Step 3: Restart the Flask Application
Restart the Flask application to ensure all changes are applied:

python run.py
Step 4: Test the Signup Form
Open your web browser and navigate to the signup page.

Fill in the email and password fields.

Click the "Sign Up" button.

You should now see an alert indicating the success or failure of the signup request. If successful, you should receive an email to confirm the account.

If you encounter any errors, please check the browser's console for any JavaScript errors and ensure that the Flask API routes are correctly defined and reachable.

The signup button still isn't doing anything.

It appears the JavaScript for handling the form submission may not be functioning as expected. Let's perform the following steps to debug and resolve this issue:

Ensure Brython is properly loaded and initialized.

Verify that the JavaScript is correctly handling the form submission.

Check for any JavaScript errors in the browser console.

Step 1: Ensure Brython is Properly Loaded
Make sure Brython is properly initialized in your base.html:

app/templates/base.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Contact App</title>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.9.5/brython.min.js"></script>
</head>
<body onload="brython()">
<div class="container">
{% block content %}{% endblock %}
</div>
<script src="{{ url_for('static', filename='js/login.js') }}"></script>
</body>
</html>
Step 2: Verify JavaScript for Handling Form Submission
Ensure that the JavaScript is correctly handling the form submission. Here is an updated version of login.js with console logs to help with debugging:

app/static/js/login.js
from browser import document, alert, ajax, console

def send_request(url, data, success_message):
console.log("Sending request to", url, "with data", data)
req = ajax.ajax()
req.open("POST", url, True)
req.set_header("Content-Type", "application/json")
req.send(data)

def on_complete(req):
console.log("Request completed with status", req.status)
if req.status == 200 or req.status == 201:
alert(success_message)
else:
alert(f"Request failed: {req.status} - {req.text}")

req.bind("complete", on_complete)

def send_login_request(event):
console.log("Login form submitted")
email = document["email"].value
password = document["password"].value
data = {"email": email, "password": password}
send_request("/api/login", data, "Login successful!")

def send_signup_request(event):
console.log("Signup form submitted")
email = document["email"].value
password = document["password"].value
data = {"email": email, "password": password}
send_request("/api/signup", data, "Sign up successful! Please check your email to confirm your account.")

def send_forgot_password_request(event):
console.log("Forgot password form submitted")
email = document["email"].value
data = {"email": email}
send_request("/api/forgot_password", data, "If that email address exists in our system, a reset link has been sent!")

document["login-form"].bind("submit", send_login_request)
document["signup-form"].bind("submit", send_signup_request)
document["forgot-password-form"].bind("submit", send_forgot_password_request)
Step 3: Check for JavaScript Errors in the Browser Console
Open your browser's developer tools (F12 or right-click and select "Inspect").

Go to the "Console" tab.

Navigate to the signup page and try submitting the form.

Check the console for any error messages or logs that can help us identify the issue.

Step 4: Test the Signup Form
Ensure the signup form is submitting the data and triggering the request to the backend:

Navigate to the signup page.

Fill in the email and password fields.

Click the "Sign Up" button.

Observe the console logs and any alerts that are triggered.

By following these steps, we should be able to identify any issues in the JavaScript handling and ensure that the form data is being sent to the backend correctly. Let me know if you encounter any specific errors or if the issue persists, and we can further debug the problem.

Uncaught SyntaxError: Unexpected identifier 'browser'Understand this error
favicon.ico:1

Failed to load resource: the server responded with a status of 404 (NOT FOUND)

127.0.0.1 - - [27/Jul/2024 08:15:39] "GET /signup HTTP/1.1" 200 -
127.0.0.1 - - [27/Jul/2024 08:15:39] "GET /static/js/login.js HTTP/1.1" 304 -
127.0.0.1 - - [27/Jul/2024 08:15:47] "GET /signup HTTP/1.1" 200 -
127.0.0.1 - - [27/Jul/2024 08:15:48] "GET /static/js/login.js HTTP/1.1" 200 -
127.0.0.1 - - [27/Jul/2024 08:15:48] "GET /favicon.ico HTTP/1.1" 404 -

The error Uncaught SyntaxError: Unexpected identifier 'browser' indicates that the Python code is being interpreted as JavaScript. This suggests that Brython may not be initialized correctly.

Let's make sure that Brython is properly loaded and initialized. Here is a step-by-step guide to ensure Brython is set up correctly:

Step 1: Correctly Load and Initialize Brython
Ensure that Brython is correctly loaded and initialized in your base.html:

app/templates/base.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Contact App</title>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.9.5/brython.min.js"></script>
</head>
<body onload="brython()">
<div class="container">
{% block content %}{% endblock %}
</div>
<script type="text/python" src="{{ url_for('static', filename='js/login.py') }}"></script>
</body>
</html>
Note that the login.js file should now be named login.py to indicate it's a Python file for Brython.

Step 2: Rename the JavaScript File to Python
Rename your login.js file to login.py and ensure it uses Brython's Python syntax.

app/static/js/login.py
Here is the corrected code with Brython:

from browser import document, alert, ajax, console

def send_signup_request(event):
console.log("Signup form submitted")
email = document["signup_email"].value
password = document["signup_password"].value
data = {"email": email, "password": password}
send_request("/api/signup", data, "Sign up successful! Please check your email to confirm your account.")

def send_forgot_password_request(event):
console.log("Forgot password form submitted")
email = document["forgot_email"].value
data = {"email": email}
send_request("/api/forgot_password", data, "If that email address exists in our system, a reset link has been sent!")

document["login-form"].bind("submit", send_login_request)
document["signup-form"].bind("submit", send_signup_request)
document["forgot-password-form"].bind("submit", send_forgot_password_request)
Step 3: Ensure Form IDs are Correct
Ensure the form IDs match the ones referenced in the Brython script.

app/templates/login.html
{% extends "base.html" %}

{% block content %}
<h2>Sign Up</h2>
<form id="signup-form" action="" method="post" onsubmit="return false;">
<div class="form-group">
<label for="signup_email">Email address</label>
<input type="email" class="form-control" id="signup_email" placeholder="Enter email">
</div>
<div class="form-group">
<label for="signup_password">Password</label>
<input type="password" class="form-control" id="signup_password" placeholder="Password">
</div>
<button type="submit" class="btn btn-primary">Sign Up</button>
</form>
{% endblock %}
app/templates/forgot_password.html
{% extends "base.html" %}

{% block content %}
<h2>Forgot Password</h2>
<form id="forgot-password-form" action="" method="post" onsubmit="return false;">
<div class="form-group">
<label for="forgot_email">Email address</label>
<input type="email" class="form-control" id="forgot_email" placeholder="Enter email">
</div>
<button type="submit" class="btn btn-primary">Send Reset Link</button>
</form>
{% endblock %}
Step 4: Restart the Flask Application
Restart the Flask application to apply the changes:

python run.py
Step 5: Test the Signup Form Again
Open your web browser and navigate to the signup page.

Fill in the email and password fields.

Click the "Sign Up" button.

Observe the console logs and any alerts that are triggered.

By ensuring Brython is properly initialized and the script is loaded as a Python file, the form submission should work correctly. Let me know if you encounter any specific errors or if the issue persists, and we can further debug the problem.

I typically need to add the brython_stdlib.js to do most things (the version below may be different - please use whichever version is best):

Let's ensure we have the correct version of Brython and its standard library included in your project. Here’s how you can properly load Brython and its standard library, and initialize it correctly in your base.html.

Step 1: Update the base.html to include Brython and its standard library
app/templates/base.html
Ensure your HTML template includes the Brython standard library and initializes Brython correctly:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Contact App</title>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython.min.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython_stdlib.js"></script>
</head>
<body onload="brython()">
<div class="container">
{% block content %}{% endblock %}
</div>
<script type="text/python" src="{{ url_for('static', filename='js/login.py') }}"></script>
</body>
</html>
Step 2: Ensure Brython script uses the correct syntax
app/static/js/login.py
Here is the corrected code with Brython:

from browser import document, alert, ajax, console

document["login-form"].bind("submit", send_login_request)
document["signup-form"].bind("submit", send_signup_request)
document["forgot-password-form"].bind("submit", send_forgot_password_request)
Step 3: Ensure form IDs match those in the script
Check that the form IDs used in your Brython script match those in your HTML templates.

app/templates/signup.html
{% extends "base.html" %}

{% block content %}
<h2>Forgot Password</h2>
<form id="forgot-password-form" action="" method="post" onsubmit="return false;">
<div class="form-group">
<label for="forgot_email">Email address</label>
<input type="email" class="form-control" id="forgot_email" placeholder="Enter email">
</div>
<button type="submit" class="btn btn-primary">Send Reset Link</button>
</form>
{% endblock %}
Step 4: Restart Flask Application
Restart the Flask application to apply changes:

python run.py
Step 5: Test the Signup Form Again
Open your web browser and navigate to the signup page.

Fill in the email and password fields.

Click the "Sign Up" button.

Observe the console logs and any alerts that are triggered.

By ensuring Brython is correctly initialized and the script is loaded as a Python file, the form submission should work correctly. Let me know if you encounter any specific errors or if the issue persists, and we can further debug the problem.

I get this error in the console on the login page:

brython.min.js:1 Traceback (most recent call last):
File "http://127.0.0.1:5000/static/js/login.py", line 39, in <module>
document["login-form"].bind("submit", send_login_request)
KeyError: login-form

The KeyError: login-form error indicates that Brython is unable to find the element with the ID login-form. This issue can occur if the element does not exist on the page at the time the Brython script is executed.

To resolve this, ensure that the Brython script is only executed once the DOM is fully loaded. You can achieve this by using the document.bind method to bind a function to the DOMContentLoaded event.

Step 1: Modify the Brython Script to Wait for DOM Content Loaded
app/static/js/login.py
Update the Brython script to ensure it waits for the DOM to be fully loaded before attempting to bind event handlers:

from browser import document, alert, ajax, console

def initialize():
console.log("Initializing event handlers")
if "login-form" in document:
document["login-form"].bind("submit", send_login_request)
if "signup-form" in document:
document["signup-form"].bind("submit", send_signup_request)
if "forgot-password-form" in document:
document["forgot-password-form"].bind("submit", send_forgot_password_request)

document.bind("DOMContentLoaded", initialize)
Step 2: Ensure Form IDs Match
Verify that the form IDs in your HTML templates match those used in the Brython script.

app/templates/login.html
{% extends "base.html" %}

{% block content %}
<h2>Forgot Password</h2>
<form id="forgot-password-form" action="" method="post" onsubmit="return false;">
<div class="form-group">
<label for="forgot_email">Email address</label>
<input type="email" class="form-control" id="forgot_email" placeholder="Enter email">
</div>
<button type="submit" class="btn btn-primary">Send Reset Link</button>
</form>
{% endblock %}
Step 3: Restart the Flask Application
Restart the Flask application to apply the changes:

python run.py
Step 4: Test the Forms Again
Open your web browser and navigate to the login or signup page.

Fill in the fields and submit the form.

Check the console logs and observe any alerts or errors.

By ensuring Brython is properly initialized and the script is only executed after the DOM is fully loaded, the form submission should work correctly. Let me know if you encounter any specific errors or if the issue persists, and we can further debug the problem.

Now I'm not getting any errors in the console on the signup page, but when I click the signup button, nothing is changing on screen

If clicking the signup button doesn't trigger any visible change, there are a few possibilities to consider. We need to ensure that the form submission is correctly sending a request to the server and that the server responds appropriately.

Here are some steps to further debug and ensure everything is working correctly:

Verify the Form Submission:
Ensure that the form submission event is being captured and processed by Brython.

Verify the AJAX Request:
Confirm that the AJAX request is sent to the server and check the server's response.

Check Server Logs:
Ensure the server is receiving the request and processing it correctly.

Step 1: Add Debugging Messages to the Brython Script
Update the Brython script to add more console logging to help debug the form submission process.

app/static/js/login.py
from browser import document, alert, ajax, console

def send_request(url, data, success_message):
console.log("Sending request to", url, "with data", data)
req = ajax.ajax()
req.open("POST", url, True)
req.set_header("Content-Type", "application/json")
req.send(data)

def on_complete(req):
console.log("Request completed with status", req.status)
console.log("Response text:", req.text)
if req.status == 200 or req.status == 201:
alert(success_message)
else:
alert(f"Request failed: {req.status} - {req.text}")

req.bind("complete", on_complete)

document.bind("DOMContentLoaded", initialize)
Step 2: Test the Signup Form Again
Open the browser's developer tools (F12 or right-click and select "Inspect") and go to the "Console" tab.

Navigate to the signup page.

Fill in the email and password fields.

Click the "Sign Up" button.

Observe the console logs for any output from the Brython script.

Step 3: Check Server Logs
Check the Flask server logs to see if the request is being received and processed correctly.

Step 4: Verify Server Response
Ensure that the server is correctly processing the request and sending an appropriate response.

If everything is working correctly, you should see console logs indicating the form submission, the AJAX request being sent, and the server's response.

If the form submission is not triggering the expected behavior, you might need to check the network activity to ensure that the request is being sent and received correctly.

Step 5: Check Network Activity
Open the browser's developer tools and go to the "Network" tab.

Navigate to the signup page.

Fill in the email and password fields.

Click the "Sign Up" button.

Observe the network activity to see if the AJAX request is being sent and if there is a response from the server.

This should help identify any issues with the form submission process. If you continue to encounter issues, please share any specific error messages or logs, and we can further troubleshoot the problem.

Network tab shows this:

signup 200 document Other 1.4 kB 25 ms bootstrap.min.css 200 stylesheet signup:6 29.6 kB 106 ms brython.min.js 200 script signup:7 227 kB 250 ms brython_stdlib.js 200 script signup:8 1.1 MB 501 ms favicon.ico 404 text/html Other 394 B 13 ms login.py?1722083583745 200 xhr brython.min.js:1 2.3 kB 15 ms

The network activity indicates that the request to login.py is being processed, but there seems to be no request sent to the /api/signup endpoint. This suggests that the form submission event is not triggering the AJAX request properly.

Step 1: Ensure Form Submission is Correctly Handled
Let's double-check the Brython script to make sure the form submission event is being correctly captured and processed.

app/static/js/login.py
Make sure the data object is converted to JSON before sending, and verify the Content-Type header is correctly set.

from browser import document, alert, ajax, console
import json

def send_request(url, data, success_message):
console.log("Sending request to", url, "with data", data)
req = ajax.ajax()
req.open("POST", url, True)
req.set_header("Content-Type", "application/json")
req.send(json.dumps(data))

def on_complete(req):
console.log("Request completed with status", req.status)
console.log("Response text:", req.text)
if req.status == 200 or req.status == 201:
alert(success_message)
else:
alert(f"Request failed: {req.status} - {req.text}")

req.bind("complete", on_complete)

def send_login_request(event):
event.preventDefault() # Prevent the default form submission
console.log("Login form submitted")
email = document["email"].value
password = document["password"].value
data = {"email": email, "password": password}
send_request("/api/login", data, "Login successful!")

def send_forgot_password_request(event):
event.preventDefault() # Prevent the default form submission
console.log("Forgot password form submitted")
email = document["forgot_email"].value
data = {"email": email}
send_request("/api/forgot_password", data, "If that email address exists in our system, a reset link has been sent!")

document.bind("DOMContentLoaded", initialize)
Step 2: Update Signup Form to Match Field IDs
Ensure that the form field IDs in your HTML template match those referenced in the Brython script.

app/templates/signup.html
{% extends "base.html" %}

{% block content %}
<h2>Sign Up</h2>
<form id="signup-form" action="" method="post" onsubmit="return false;">
<div class="form-group">
<label for="signup_email">Email address</label>
<input type="email" class="form-control" id="signup_email" placeholder="Enter email">
</div>
<div class="form-group">
<label for="signup_password">Password</label>
<input type="password" class="form-control" id="signup_password" placeholder="Password">
</div>
<button type="submit" class="btn btn-primary">Sign Up</button>
</form>
{% endblock %}
Step 3: Restart Flask Application
Restart the Flask application to apply the changes:

python run.py
Step 4: Test the Signup Form Again
Open the browser's developer tools (F12 or right-click and select "Inspect") and go to the "Console" tab.

Navigate to the signup page.

Fill in the email and password fields.

Click the "Sign Up" button.

Observe the console logs for any output from the Brython script.

Check the "Network" tab to see if the request to /api/signup is being sent.

By ensuring the form submission is correctly handled and the data is correctly formatted as JSON, the form submission should now work as expected. If you encounter any specific errors or logs, please share them, and we can further troubleshoot the problem.

signup 200 document Other 1.4 kB 8 ms bootstrap.min.css 200 stylesheet signup:7 (memory cache) 0 ms brython.min.js 200 script signup:8 (memory cache) 1 ms brython_stdlib.js 200 script signup:9 (memory cache) 0 ms login.py?1722083879820 200 xhr brython.min.js:1 2.5 kB 37 ms

Here is an example of bython code in which ajax is working correctly. Please use it as a model of correct ajax usage in brython:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Flattery App</title>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython.min.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython_stdlib.js"></script>
</head>
<body onload="brython()">
<div class="container mt-4">
<h2 class="text-center">Flattery</h2>
<div class="form-group">
<label for="greeting-select">Select a greeting:</label>
<select id="greeting-select" class="form-control">
<option value="Hi">Hi</option>
<option value="Hello">Hello</option>
<option value="Greetings">Greetings</option>
<option value="Bonjour">Bonjour</option>
<option value="Hey">Hey</option>
</select>
</div>
<div class="form-group">
<label for="name-input">Enter your name:</label>
<input type="text" id="name-input" class="form-control" placeholder="Your Name">
</div>
<div class="text-center mt-4">
<button id="greet-button" class="btn btn-primary">Greet Me</button>
</div>
<div id="output" class="alert alert-primary text-center mt-4" style="display:none;"></div>
</div>
<script type="text/python">
from browser import document, ajax, window

def on_complete(req):
data = window.JSON.parse(req.text) # Use JSON.parse to handle JSON response
greeting = data['greeting']
output_div = document['output']
output_div.text = greeting
output_div.style.display = 'block'

def send_greeting(event):
name = document['name-input'].value
greeting = document['greeting-select'].value
ajax.post(
'/greet',
data=window.JSON.stringify({'name': name, 'greeting': greeting}),
headers={'Content-Type': 'application/json'},
oncomplete=on_complete
)

# Bind the send_greeting function to the button click event
document['greet-button'].bind('click', send_greeting)
</script>
</body>
</html>

Based on the provided working example, we will adjust our Brython script to closely follow the pattern that is successfully handling AJAX requests.

Here's the corrected approach for handling the signup functionality:

Step 1: Update the base.html to Ensure Brython and Its Standard Library are Correctly Loaded
Ensure your HTML template includes Brython and its standard library:

app/templates/base.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Contact App</title>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython.min.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython_stdlib.js"></script>
</head>
<body onload="brython()">
<div class="container">
{% block content %}{% endblock %}
</div>
<script type="text/python" src="{{ url_for('static', filename='js/login.py') }}"></script>
</body>
</html>
Step 2: Correct the Brython Script to Follow the Working Example
Ensure the Brython script handles AJAX requests correctly, based on the provided example.

app/static/js/login.py
Update the Brython script as follows:

from browser import document, ajax, console, window

def on_complete(req):
console.log("Request completed with status", req.status)
if req.status == 200 or req.status == 201:
data = window.JSON.parse(req.text)
alert(data['message'])
else:
alert(f"Request failed: {req.status} - {req.text}")

def send_request(url, data, success_message):
console.log("Sending request to", url, "with data", data)
ajax.post(
url,
data=window.JSON.stringify(data),
headers={'Content-Type': 'application/json'},
oncomplete=on_complete
)

def send_forgot_password_request(event):
event.preventDefault() # Prevent the default form submission
console.log("Forgot password form submitted")
email = document["forgot_email"].value
data = {"email": email}
send_request("/api/forgot_password", data, "If that email address exists in our system, a reset link has been sent!")

document.bind("DOMContentLoaded", initialize)
Step 3: Update the Signup Form to Ensure IDs Match
Ensure that the form field IDs in your HTML template match those referenced in the Brython script.

app/templates/signup.html
{% extends "base.html" %}

{% block content %}
<h2>Sign Up</h2>
<form id="signup-form" action="" method="post" onsubmit="return false;">
<div class="form-group">
<label for="signup_email">Email address</label>
<input type="email" class="form-control" id="signup_email" placeholder="Enter email">
</div>
<div class="form-group">
<label for="signup_password">Password</label>
<input type="password" class="form-control" id="signup_password" placeholder="Password">
</div>
<button type="submit" class="btn btn-primary">Sign Up</button>
</form>
{% endblock %}
Step 4: Restart the Flask Application
Restart the Flask application to apply the changes:

python run.py
Step 5: Test the Signup Form Again
Open the browser's developer tools (F12 or right-click and select "Inspect") and go to the "Console" tab.

Navigate to the signup page.

Fill in the email and password fields.

Click the "Sign Up" button.

Observe the console logs for any output from the Brython script.

Check the "Network" tab to see if the request to /api/signup is being sent.

By ensuring the Brython script follows the correct pattern for handling AJAX requests, the form submission should now work as expected. If you encounter any specific errors or logs, please share them, and we can further troubleshoot the problem.

There's still no response when clicking the signup button

The only error in the console is:

GET http://127.0.0.1:5000/favicon.ico 404 (NOT FOUND)Understand this error

If I clear the network log and press the signup button, there is no network activity

The issue seems to be that the event handler for the signup form is not being correctly attached or executed. Given that there are no network requests being made, we need to ensure that the Brython script is properly binding the event handlers and that the form submission is correctly triggering the AJAX request.

Let's add some more debugging information to ensure that the event handlers are correctly attached and triggered.

Step 1: Update the Brython Script with More Debugging
app/static/js/login.py
Add more console logs to ensure that the event handlers are being correctly attached and triggered.

from browser import document, ajax, console, window

def send_forgot_password_request(event):
event.preventDefault() # Prevent the default form submission
console.log("Forgot password form submitted")
email = document["forgot_email"].value
data = {"email": email}
send_request("/api/forgot_password", data, "If that email address exists in our system, a reset link has been sent!")

def initialize():
console.log("Initializing event handlers")
if "login-form" in document:
console.log("Binding login form")
document["login-form"].bind("submit", send_login_request)
if "signup-form" in document:
console.log("Binding signup form")
document["signup-form"].bind("submit", send_signup_request)
if "forgot-password-form" in document:
console.log("Binding forgot password form")
document["forgot-password-form"].bind("submit", send_forgot_password_request)

document.bind("DOMContentLoaded", initialize)
Step 2: Verify the HTML Templates
Ensure that the form IDs match those referenced in the Brython script.

app/templates/signup.html
{% extends "base.html" %}

{% block content %}
<h2>Sign Up</h2>
<form id="signup-form" action="" method="post" onsubmit="return false;">
<div class="form-group">
<label for="signup_email">Email address</label>
<input type="email" class="form-control" id="signup_email" placeholder="Enter email">
</div>
<div class="form-group">
<label for="signup_password">Password</label>
<input type="password" class="form-control" id="signup_password" placeholder="Password">
</div>
<button type="submit" class="btn btn-primary">Sign Up</button>
</form>
{% endblock %}
Step 3: Restart the Flask Application
Restart the Flask application to ensure all changes are applied.

python run.py
Step 4: Test the Signup Form Again
Open the browser's developer tools (F12 or right-click and select "Inspect") and go to the "Console" tab.

Navigate to the signup page.

Check the console to see if the "Binding signup form" message appears, indicating that the event handler was correctly attached.

Fill in the email and password fields.

Click the "Sign Up" button.

Observe the console logs to see if "Signup form submitted" is printed.

By adding these additional debug logs, we should be able to determine if the event handlers are correctly attached and triggered. If you encounter any specific errors or logs, please share them, and we can further troubleshoot the problem.

No debug logs are being printed:

And to be clear, nothing happens when I click either the sign up button on the signup page, or the login button on the login page. Here's another example of code in which ajax works correctly in brython code:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>User Records with Brython</title>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython.min.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython_stdlib.js"></script>
</head>
<body onload="brython()">
<div class="container mt-4">
<h2 class="text-center">User Records</h2>
<table class="table table-striped" id="dataTable">
<thead>
<tr>
<th>ID</th>
<th>Name</th>
<th>Username</th>
<th>Email</th>
<th>Phone</th>
<th>Website</th>
</tr>
</thead>
<tbody id="table-body">

</tbody>
</table>
</div>
<script type="text/python">
from browser import document, ajax

# Global variable to hold the fetched users
users = []

# Function to fetch data from the API
def fetch_data():
def on_complete(req):
global users
if req.status == 200:
users = req.json
populate_table(users)
else:
print("Error fetching data:", req.status)

ajax.get('https://jsonplaceholder.typicode.com/users', oncomplete=on_complete)

# Function to populate the table with data
def populate_table(data):
table_body = document['table-body']
table_body.innerHTML = ''
for user in data:
row = f"""
<tr>
<td>{user['id']}</td>
<td>{user['name']}</td>
<td>{user['username']}</td>
<td>{user['email']}</td>
<td>{user['phone']}</td>
<td><a href="http://{user['website']}" target="_blank">{user['website']}</a></td>
</tr>
"""
table_body.innerHTML += row

# Fetch data when the page loads
fetch_data()
</script>
</body>
</html>

Let's make sure that the Brython script is being properly initialized and that the form event handlers are correctly attached.

Step 1: Update the base.html to Ensure Brython is Correctly Loaded
Ensure your HTML template includes Brython and its standard library:

app/templates/base.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Contact App</title>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython.min.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython_stdlib.js"></script>
</head>
<body onload="brython()">
<div class="container">
{% block content %}{% endblock %}
</div>
<script type="text/python" src="{{ url_for('static', filename='js/login.py') }}"></script>
</body>
</html>
Step 2: Verify the Correct Brython Script
Ensure that the Brython script follows the working pattern of the example provided. Here is an updated version:

app/static/js/login.py
Update the Brython script as follows:

from browser import document, ajax, console, window

def send_forgot_password_request(event):
event.preventDefault() # Prevent the default form submission
console.log("Forgot password form submitted")
email = document["forgot_email"].value
data = {"email": email}
send_request("/api/forgot_password", data, "If that email address exists in our system, a reset link has been sent!")

document.bind("DOMContentLoaded", initialize)
Step 3: Verify HTML Template for Signup Form
Ensure that the form IDs match those referenced in the Brython script.

app/templates/signup.html
{% extends "base.html" %}

{% block content %}
<h2>Sign Up</h2>
<form id="signup-form" action="" method="post" onsubmit="return false;">
<div class="form-group">
<label for="signup_email">Email address</label>
<input type="email" class="form-control" id="signup_email" placeholder="Enter email">
</div>
<div class="form-group">
<label for="signup_password">Password</label>
<input type="password" class="form-control" id="signup_password" placeholder="Password">
</div>
<button type="submit" class="btn btn-primary">Sign Up</button>
</form>
{% endblock %}
Step 4: Restart the Flask Application
Restart the Flask application to apply the changes:

python run.py
Step 5: Test the Signup Form Again
Open the browser's developer tools (F12 or right-click and select "Inspect") and go to the "Console" tab.

Navigate to the signup page.

Check the console to see if the "Binding signup form" message appears, indicating that the event handler was correctly attached.

Fill in the email and password fields.

Click the "Sign Up" button.

Observe the console logs to see if "Signup form submitted" is printed.

If you still don't see any logs in the console, please try the following:

Step 6: Ensure the Correct Execution of the Brython Script
Add a simple log message at the top of the Brython script to confirm it is being executed:

from browser import document, ajax, console, window

console.log("Brython script is running")

# The rest of the script remains the same...
This should help confirm that the script is being executed and help identify where the issue might be. If you encounter any specific errors or logs, please share them, and we can further troubleshoot the problem.

Console shows the message:

Brython script is running

But nothing happens when the button is clicked, on EITHER the login page or the signup page

Given that the message "Brython script is running" is displayed but the event handlers are not triggering, it seems that the form IDs or elements might not be correctly matching what the script expects. Let's add more debugging information to ensure the elements are being correctly selected and the event handlers are being attached.

Step 1: Update the Brython Script with Detailed Debugging
Add more logging to confirm the presence of elements and the attachment of event handlers.

app/static/js/login.py
from browser import document, ajax, console, window

console.log("Brython script is running")

def send_forgot_password_request(event):
event.preventDefault() # Prevent the default form submission
console.log("Forgot password form submitted")
email = document["forgot_email"].value
data = {"email": email}
send_request("/api/forgot_password", data, "If that email address exists in our system, a reset link has been sent!")

def initialize():
console.log("Initializing event handlers")
if "login-form" in document:
console.log("Login form found")
document["login-form"].bind("submit", send_login_request)
else:
console.log("Login form not found")

if "signup-form" in document:
console.log("Signup form found")
document["signup-form"].bind("submit", send_signup_request)
else:
console.log("Signup form not found")

if "forgot-password-form" in document:
console.log("Forgot password form found")
document["forgot-password-form"].bind("submit", send_forgot_password_request)
else:
console.log("Forgot password form not found")

document.bind("DOMContentLoaded", initialize)
Step 2: Verify HTML Template for Signup and Login Forms
Ensure that the form IDs match those referenced in the Brython script.

app/templates/login.html
{% extends "base.html" %}

{% block content %}
<h2>Sign Up</h2>
<form id="signup-form" action="" method="post" onsubmit="return false;">
<div class="form-group">
<label for="signup_email">Email address</label>
<input type="email" class="form-control" id="signup_email" placeholder="Enter email">
</div>
<div class="form-group">
<label for="signup_password">Password</label>
<input type="password" class="form-control" id="signup_password" placeholder="Password">
</div>
<button type="submit" class="btn btn-primary">Sign Up</button>
</form>
{% endblock %}
Step 3: Restart the Flask Application
Restart the Flask application to apply the changes:

python run.py
Step 4: Test the Signup and Login Forms Again
Open the browser's developer tools (F12 or right-click and select "Inspect") and go to the "Console" tab.

Navigate to the login and signup pages.

Check the console to see if the messages "Login form found" and "Signup form found" appear, indicating that the event handlers were correctly attached.

Fill in the email and password fields.

Click the "Sign Up" button or "Login" button.

Observe the console logs to see if "Signup form submitted" or "Login form submitted" is printed.

By adding these additional debug logs, we should be able to determine if the elements are correctly found and the event handlers are correctly attached. If you encounter any specific errors or logs, please share them, and we can further troubleshoot the problem.

Brython script is running, but no other logs are being printed out when I click either button

It looks like the script is running, but the event handlers are not being attached to the forms. This might be due to the forms not being present when the script is executed.

Let's try a different approach to ensure the forms are correctly found and the event handlers are attached after the DOM content is fully loaded.

Step 1: Update Brython Script to Check for Element Presence
Ensure the forms are present and attach event handlers within the DOMContentLoaded event handler.

app/static/js/login.py
from browser import document, ajax, console, window

console.log("Brython script is running")

def send_forgot_password_request(event):
event.preventDefault() # Prevent the default form submission
console.log("Forgot password form submitted")
email = document["forgot_email"].value
data = {"email": email}
send_request("/api/forgot_password", data, "If that email address exists in our system, a reset link has been sent!")

def initialize():
console.log("Initializing event handlers")

login_form = document.getElementById("login-form")
if login_form is not None:
console.log("Login form found")
login_form.bind("submit", send_login_request)
else:
console.log("Login form not found")

signup_form = document.getElementById("signup-form")
if signup_form is not None:
console.log("Signup form found")
signup_form.bind("submit", send_signup_request)
else:
console.log("Signup form not found")

forgot_password_form = document.getElementById("forgot-password-form")
if forgot_password_form is not None:
console.log("Forgot password form found")
forgot_password_form.bind("submit", send_forgot_password_request)
else:
console.log("Forgot password form not found")

document.bind("DOMContentLoaded", initialize)
Step 2: Verify HTML Template for Signup and Login Forms
Ensure that the form IDs match those referenced in the Brython script.

app/templates/login.html
{% extends "base.html" %}

{% block content %}
<h2>Sign Up</h2>
<form id="signup-form" action="" method="post" onsubmit="return false;">
<div class="form-group">
<label for="signup_email">Email address</label>
<input type="email" class="form-control" id="signup_email" placeholder="Enter email">
</div>
<div class="form-group">
<label for="signup_password">Password</label>
<input type="password" class="form-control" id="signup_password" placeholder="Password">
</div>
<button type="submit" class="btn btn-primary">Sign Up</button>
</form>
{% endblock %}
Step 3: Restart the Flask Application
Restart the Flask application to ensure all changes are applied.

python run.py
Step 4: Test the Signup and Login Forms Again
Open the browser's developer tools (F12 or right-click and select "Inspect") and go to the "Console" tab.

Navigate to the login and signup pages.

Check the console to see if the messages "Login form found" and "Signup form found" appear, indicating that the event handlers were correctly attached.

Fill in the email and password fields.

Click the "Sign Up" button or "Login" button.

Observe the console logs to see if "Signup form submitted" or "Login form submitted" is printed.

By adding these additional checks, we should be able to determine if the elements are correctly found and the event handlers are correctly attached. If you encounter any specific errors or logs, please share them, and we can further troubleshoot the problem.

Still nothing printed in the logs when either button is printed, just Brython script is running

It seems that the form elements are not being correctly found or the event handlers are not being attached as expected. Let's try a slightly different approach to debug and ensure the event handlers are correctly attached.

Step 1: Simplify the Script and Use Document Events
We can use a more simplified approach to directly attach event listeners to the form elements. This will help us ensure the elements are found and the events are correctly handled.

app/static/js/login.py
Update the Brython script as follows:

from browser import document, ajax, console, window

console.log("Brython script is running")

def send_forgot_password_request(event):
event.preventDefault() # Prevent the default form submission
console.log("Forgot password form submitted")
email = document["forgot_email"].value
data = {"email": email}
send_request("/api/forgot_password", data, "If that email address exists in our system, a reset link has been sent!")

app/templates/login.html
{% extends "base.html" %}

{% block content %}
<h2>Sign Up</h2>
<form id="signup-form" action="" method="post" onsubmit="return false;">
<div class="form-group">
<label for="signup_email">Email address</label>
<input type="email" class="form-control" id="signup_email" placeholder="Enter email">
</div>
<div class="form-group">
<label for="signup_password">Password</label>
<input type="password" class="form-control" id="signup_password" placeholder="Password">
</div>
<button type="submit" class="btn btn-primary">Sign Up</button>
</form>
{% endblock %}
Step 3: Restart the Flask Application
Restart the Flask application to ensure all changes are applied:

python run.py
Step 4: Test the Signup and Login Forms Again
Open the browser's developer tools (F12 or right-click and select "Inspect") and go to the "Console" tab.

Navigate to the login and signup pages.

Check the console to see if the messages "Login form handler attached" and "Signup form handler attached" appear, indicating that the event handlers were correctly attached.

Fill in the email and password fields.

Click the "Sign Up" button or "Login" button.

Observe the console logs to see if "Signup form submitted" or "Login form submitted" is printed.

By directly attaching event handlers to the forms after confirming their presence, we should be able to ensure the events are correctly handled. If you encounter any specific errors or logs, please share them, and we can further troubleshoot the problem.

Brython script is running
brython.min.js:1 Attaching event handlers
brython.min.js:1 Login form handler attached
brython.min.js:1 Login form submitted
brython.min.js:1 Sending request to /api/login with data {email: 'nick@guitarz.org', password: '7u8i-9o0P'}
login:1

Failed to load resource: the server responded with a status of 401 (UNAUTHORIZED)Understand this error
brython.min.js:1 Request completed with status 401
brython.min.js:1 Traceback (most recent call last):
File "http://127.0.0.1:5000/static/js/login.py", line 11, in on_complete
alert(f"Request failed: {req.status} - {req.text}")
^^^^^
NameError: name 'alert' is not defined
$io.flush @ brython.min.js:1
method @ brython.min.js:1
$B.show_error @ brython.min.js:1
$B.handle_error @ brython.min.js:1
self.js.<computed> @ VM21867:199
xmlhttp.onreadystatechange @ VM21867:341
XMLHttpRequest.send (async)
_request_with_body @ VM21867:435
post @ VM21867:474
(anonymous) @ brython.min.js:1
send_request13 @ VM21865:105
(anonymous) @ brython.min.js:1
send_login_request17 @ VM21865:172
(anonymous) @ brython.min.js:1Understand this error
brython.min.js:1 Uncaught alert
at _b_.NameError.$factory (eval at $B.$make_exc (https://cdn.jsdelivr.net/npm/brython@3.11.0/brython.min.js:1:346617), <anonymous>:3:15)
at $B.name_error (https://cdn.jsdelivr.net/npm/brython@3.11.0/brython.min.js:1:349750)
at $B.resolve_in_scopes (https://cdn.jsdelivr.net/npm/brython@3.11.0/brython.min.js:1:777710)
at on_complete12 (eval at $B.loop (https://cdn.jsdelivr.net/npm/brython@3.11.0/brython.min.js:1:192603), <anonymous>:48:13)
at self.js.<computed> [as oncomplete] (eval at run_js (https://cdn.jsdelivr.net/npm/brython@3.11.0/brython.min.js:1:438610), <anonymous>:197:29)
at xmlhttp.onreadystatechange (eval at run_js (https://cdn.jsdelivr.net/npm/brython@3.11.0/brython.min.js:1:438610), <anonymous>:341:18)

The NameError: name 'alert' is not defined indicates that the alert function is not defined in the current scope. In Brython, alert is available through the window module.

Let's fix this error and also handle the 401 Unauthorized response gracefully.

Step 1: Update the Brython Script to Fix the alert Error
Update the script to import window and use window.alert.

app/static/js/login.py
from browser import document, ajax, console, window

console.log("Brython script is running")

def on_complete(req):
console.log("Request completed with status", req.status)
if req.status == 200 or req.status == 201:
data = window.JSON.parse(req.text)
window.alert(data['message'])
else:
window.alert(f"Request failed: {req.status} - {req.text}")

def send_forgot_password_request(event):
event.preventDefault() # Prevent the default form submission
console.log("Forgot password form submitted")
email = document["forgot_email"].value
data = {"email": email}
send_request("/api/forgot_password", data, "If that email address exists in our system, a reset link has been sent!")

app/templates/login.html
{% extends "base.html" %}

{% block content %}
<h2>Sign Up</h2>
<form id="signup-form" action="" method="post" onsubmit="return false;">
<div class="form-group">
<label for="signup_email">Email address</label>
<input type="email" class="form-control" id="signup_email" placeholder="Enter email">
</div>
<div class="form-group">
<label for="signup_password">Password</label>
<input type="password" class="form-control" id="signup_password" placeholder="Password">
</div>
<button type="submit" class="btn btn-primary">Sign Up</button>
</form>
{% endblock %}
Step 3: Restart the Flask Application
Restart the Flask application to apply the changes:

python run.py
Step 4: Test the Signup and Login Forms Again
Open the browser's developer tools (F12 or right-click and select "Inspect") and go to the "Console" tab.

Navigate to the login and signup pages.

Check the console to see if the messages "Login form handler attached" and "Signup form handler attached" appear, indicating that the event handlers were correctly attached.

Fill in the email and password fields.

Click the "Sign Up" button or "Login" button.

Observe the console logs and alerts to see if the form submission is correctly handled.

By using window.alert to handle alerts and adding more logging, we should be able to confirm that the event handlers are correctly attached and the form submissions are being processed. If you encounter any specific errors or logs, please share them, and we can further troubleshoot the problem.

C:\Users\nick\Downloads\contact_app>
C:\Users\nick\Downloads\contact_app>python run.py
* Serving Flask app 'app' (lazy loading)
* Environment: production
WARNING: This is a development server. Do not use it in a production deployment.
Use a production WSGI server instead.
* Debug mode: on
* Restarting with watchdog (windowsapi)
* Debugger is active!
* Debugger PIN: 836-341-997
* Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
127.0.0.1 - - [27/Jul/2024 09:05:52] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [27/Jul/2024 09:05:53] "GET /static/js/login.py?1722085552950 HTTP/1.1" 200 -
127.0.0.1 - - [27/Jul/2024 09:06:05] "POST /api/login HTTP/1.1" 401 -
127.0.0.1 - - [27/Jul/2024 09:06:35] "GET /signup HTTP/1.1" 200 -
127.0.0.1 - - [27/Jul/2024 09:06:35] "GET /static/js/login.py?1722085595860 HTTP/1.1" 200 -
127.0.0.1 - - [27/Jul/2024 09:06:39] "GET /signup HTTP/1.1" 200 -
127.0.0.1 - - [27/Jul/2024 09:06:40] "GET /favicon.ico HTTP/1.1" 404 -
127.0.0.1 - - [27/Jul/2024 09:06:40] "GET /static/js/login.py?1722085600042 HTTP/1.1" 200 -
* Detected change in 'C:\\Users\\nick\\AppData\\Local\\Programs\\Python\\Python311\\Lib\\site-packages\\flask\\app.py', reloading
* Detected change in 'C:\\Users\\nick\\Downloads\\contact_app\\app\\routes.py', reloading
* Detected change in 'C:\\Users\\nick\\AppData\\Local\\Programs\\Python\\Python311\\Lib\\site-packages\\flask_mail.py', reloading
127.0.0.1 - - [27/Jul/2024 09:06:53] "POST /api/signup HTTP/1.1" 500 -
* Detected change in 'C:\\Users\\nick\\AppData\\Local\\Programs\\Python\\Python311\\Lib\\smtplib.py', reloading
Traceback (most recent call last):
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 2088, in __call__
return self.wsgi_app(environ, start_response)
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 2073, in wsgi_app
response = self.handle_exception(e)
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 2070, in wsgi_app
response = self.full_dispatch_request()
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 1515, in full_dispatch_request
rv = self.handle_user_exception(e)
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 1513, in full_dispatch_request
rv = self.dispatch_request()
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 1499, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
File "C:\Users\nick\Downloads\contact_app\app\routes.py", line 42, in api_signup
mail.send(msg)
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask_mail.py", line 492, in send
message.send(connection)
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask_mail.py", line 427, in send
connection.send(self)
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask_mail.py", line 188, in send
self.host.sendmail(sanitize_address(envelope_from or message.sender),
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\smtplib.py", line 887, in sendmail
raise SMTPSenderRefused(code, resp, from_addr)
smtplib.SMTPSenderRefused: (530, b'5.7.0 Authentication Required. For more information, go to\n5.7.0 https://support.google.com/mail/?p=WantAuthError 6a1803df08f44-6bb3f8d82a1sm28729896d6.8 - gsmtp', 'noreply@demo.com')
* Restarting with watchdog (windowsapi)
* Debugger is active!
* Debugger PIN: 836-341-997
* Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)

This time I got alert messages for both buttons, but I can't copy the error messages displayed in those alerts (maybe print to console)

It's good to hear that the form submissions are now being handled and that the alert messages are being shown. However, it looks like you encountered two separate issues:

401 Unauthorized for login request: This means the credentials provided are incorrect or not authorized.

500 Internal Server Error for signup request: This error is due to an SMTP authentication issue.

Let's address both issues:

Step 1: Handle Unauthorized Error in Login
To handle the 401 Unauthorized error gracefully and log the response for easier debugging, let's update the on_complete function:

app/static/js/login.py
Update the on_complete function to log the response text to the console:

from browser import document, ajax, console, window

console.log("Brython script is running")

def on_complete(req):
console.log("Request completed with status", req.status)
console.log("Response text:", req.text)
if req.status == 200 or req.status == 201:
data = window.JSON.parse(req.text)
window.alert(data['message'])
else:
window.alert(f"Request failed: {req.status} - {req.text}")

def send_forgot_password_request(event):
event.preventDefault() # Prevent the default form submission
console.log("Forgot password form submitted")
email = document["forgot_email"].value
data = {"email": email}
send_request("/api/forgot_password", data, "If that email address exists in our system, a reset link has been sent!")

# Attach event handlers directly
console.log("Attaching event handlers")
if document.getElementById("login-form"):
document.getElementById("login-form").bind("submit", send_login_request)
console.log("Login form handler attached")
if document.getElementById("signup-form"):
document.getElementById("signup-form").bind("submit", send_signup_request)
console.log("Signup form handler attached")
if document.getElementById("forgot-password-form"):
document.getElementById("forgot-password-form").bind("submit", send_forgot_password_request)
console.log("Forgot password form handler attached")
Step 2: Fix SMTP Authentication Error for Signup
The 500 Internal Server Error indicates an SMTP authentication issue. You need to configure Flask-Mail with the correct credentials for sending emails.

Ensure that your config.py has the correct SMTP server settings and that you have set the appropriate environment variables for the email username and password.

config.py
import os

class Config:
SECRET_KEY = os.environ.get('SECRET_KEY') or 'you-will-never-guess'
SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL') or 'sqlite:///site.db'
SQLALCHEMY_TRACK_MODIFICATIONS = False
MAIL_SERVER = 'smtp.googlemail.com'
MAIL_PORT = 587
MAIL_USE_TLS = True
MAIL_USERNAME = os.environ.get('EMAIL_USER') # Set this environment variable
MAIL_PASSWORD = os.environ.get('EMAIL_PASS') # Set this environment variable
Step 3: Set Environment Variables
Make sure to set the environment variables for your email credentials. In your terminal, run:

export EMAIL_USER="your-email@example.com"
export EMAIL_PASS="your-email-password"
For Windows Command Prompt:

set EMAIL_USER=your-email@example.com
set EMAIL_PASS=your-email-password
For Windows PowerShell:

$env:EMAIL_USER="your-email@example.com"
$env:EMAIL_PASS="your-email-password"
Step 4: Restart the Flask Application
Restart the Flask application to apply the changes:

python run.py
Step 5: Test the Signup and Login Forms Again
Open the browser's developer tools (F12 or right-click and select "Inspect") and go to the "Console" tab.

Navigate to the login and signup pages.

Fill in the email and password fields.

Click the "Sign Up" button or "Login" button.

Observe the console logs and alerts to see if the form submission is correctly handled and the detailed error messages are logged.

By handling the unauthorized error gracefully and fixing the SMTP authentication issue, you should be able to debug the issues more effectively. If you encounter any specific errors or logs, please share them, and we can further troubleshoot the problem.

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>sqlalchemy.exc.IntegrityError: (sqlite3.IntegrityError) UNIQUE constraint failed: user.email
[SQL: INSERT INTO user (email, password, created_at) VALUES (?, ?, ?)]
[parameters: ('nick@guitarz.org', '7u8i-9o0P', '2024-07-27 13:14:22.784848')]
(Background on this error at: http://sqlalche.me/e/13/gkpj) // Werkzeug Debugger</title>
<link rel="stylesheet" href="?__debugger__=yes&cmd=resource&f=style.css"
type="text/css">

<link rel="shortcut icon"
href="?__debugger__=yes&cmd=resource&f=console.png">
<script src="?__debugger__=yes&cmd=resource&f=debugger.js"></script>
<script type="text/javascript">
var TRACEBACK = 2483053719632,
CONSOLE_MODE = false,
EVALEX = true,
EVALEX_TRUSTED = false,
SECRET = "mEEBjaFCNSbSua0TGsf2";
</script>
</head>
<body style="background-color: #fff">
<div class="debugger">
<h1>sqlalchemy.exc.IntegrityError</h1>
<div class="detail">
<p class="errormsg">sqlalchemy.exc.IntegrityError: (sqlite3.IntegrityError) UNIQUE constraint failed: user.email
[SQL: INSERT INTO user (email, password, created_at) VALUES (?, ?, ?)]
[parameters: ('nick@guitarz.org', '7u8i-9o0P', '2024-07-27 13:14:22.784848')]
(Background on this error at: http://sqlalche.me/e/13/gkpj)</p>
</div>
<h2 class="traceback">Traceback <em>(most recent call last)</em></h2>
<div class="traceback">
<h3></h3>
<ul><li><div class="frame" id="frame-2483053493456">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\base.py"</cite>,
line <em class="line">1276</em>,
in <code class="function">_execute_context</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>for fn in self.dialect.dispatch.do_execute:</pre>
<pre class="line before"><span class="ws"> </span>if fn(cursor, statement, parameters, context):</pre>
<pre class="line before"><span class="ws"> </span>evt_handled = True</pre>
<pre class="line before"><span class="ws"> </span>break</pre>
<pre class="line before"><span class="ws"> </span>if not evt_handled:</pre>
<pre class="line current"><span class="ws"> </span>self.dialect.do_execute(</pre>
<pre class="line after"><span class="ws"> </span>cursor, statement, parameters, context</pre>
<pre class="line after"><span class="ws"> </span>)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>if self._has_events or self.engine._has_events:</pre>
<pre class="line after"><span class="ws"> </span>self.dispatch.after_cursor_execute(</pre></div>
</div>

<li><div class="frame" id="frame-2483053491856">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\default.py"</cite>,
line <em class="line">608</em>,
in <code class="function">do_execute</code></h4>
<div class="source library"><pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>def do_executemany(self, cursor, statement, parameters, context=None):</pre>
<pre class="line before"><span class="ws"> </span>cursor.executemany(statement, parameters)</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>def do_execute(self, cursor, statement, parameters, context=None):</pre>
<pre class="line current"><span class="ws"> </span>cursor.execute(statement, parameters)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def do_execute_no_params(self, cursor, statement, context=None):</pre>
<pre class="line after"><span class="ws"> </span>cursor.execute(statement)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def is_disconnect(self, e, connection, cursor):</pre></div>
</div>

<li><div class="exc-divider">The above exception was the direct cause of the following exception:</div>
<li><div class="frame" id="frame-2483053719952">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py"</cite>,
line <em class="line">2088</em>,
in <code class="function">__call__</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>def __call__(self, environ: dict, start_response: t.Callable) -> t.Any:</pre>
<pre class="line before"><span class="ws"> </span>"""The WSGI server calls the Flask application object as the</pre>
<pre class="line before"><span class="ws"> </span>WSGI application. This calls :meth:wsgi_app, which can be</pre>
<pre class="line before"><span class="ws"> </span>wrapped to apply middleware.</pre>
<pre class="line before"><span class="ws"> </span>"""</pre>
<pre class="line current"><span class="ws"> </span>return self.wsgi_app(environ, start_response)</pre></div>
</div>

<li><div class="frame" id="frame-2483053720016">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py"</cite>,
line <em class="line">2073</em>,
in <code class="function">wsgi_app</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>try:</pre>
<pre class="line before"><span class="ws"> </span>ctx.push()</pre>
<pre class="line before"><span class="ws"> </span>response = self.full_dispatch_request()</pre>
<pre class="line before"><span class="ws"> </span>except Exception as e:</pre>
<pre class="line before"><span class="ws"> </span>error = e</pre>
<pre class="line current"><span class="ws"> </span>response = self.handle_exception(e)</pre>
<pre class="line after"><span class="ws"> </span>except: # noqa: B001</pre>
<pre class="line after"><span class="ws"> </span>error = sys.exc_info()[1]</pre>
<pre class="line after"><span class="ws"> </span>raise</pre>
<pre class="line after"><span class="ws"> </span>return response(environ, start_response)</pre>
<pre class="line after"><span class="ws"> </span>finally:</pre></div>
</div>

<li><div class="frame" id="frame-2483053720080">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py"</cite>,
line <em class="line">2070</em>,
in <code class="function">wsgi_app</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>ctx = self.request_context(environ)</pre>
<pre class="line before"><span class="ws"> </span>error: t.Optional[BaseException] = None</pre>
<pre class="line before"><span class="ws"> </span>try:</pre>
<pre class="line before"><span class="ws"> </span>try:</pre>
<pre class="line before"><span class="ws"> </span>ctx.push()</pre>
<pre class="line current"><span class="ws"> </span>response = self.full_dispatch_request()</pre>
<pre class="line after"><span class="ws"> </span>except Exception as e:</pre>
<pre class="line after"><span class="ws"> </span>error = e</pre>
<pre class="line after"><span class="ws"> </span>response = self.handle_exception(e)</pre>
<pre class="line after"><span class="ws"> </span>except: # noqa: B001</pre>
<pre class="line after"><span class="ws"> </span>error = sys.exc_info()[1]</pre></div>
</div>

<li><div class="frame" id="frame-2483053720144">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py"</cite>,
line <em class="line">1515</em>,
in <code class="function">full_dispatch_request</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>request_started.send(self)</pre>
<pre class="line before"><span class="ws"> </span>rv = self.preprocess_request()</pre>
<pre class="line before"><span class="ws"> </span>if rv is None:</pre>
<pre class="line before"><span class="ws"> </span>rv = self.dispatch_request()</pre>
<pre class="line before"><span class="ws"> </span>except Exception as e:</pre>
<pre class="line current"><span class="ws"> </span>rv = self.handle_user_exception(e)</pre>
<pre class="line after"><span class="ws"> </span>return self.finalize_request(rv)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def finalize_request(</pre>
<pre class="line after"><span class="ws"> </span>self,</pre>
<pre class="line after"><span class="ws"> </span>rv: t.Union[ResponseReturnValue, HTTPException],</pre></div>
</div>

<li><div class="frame" id="frame-2483053720208">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py"</cite>,
line <em class="line">1513</em>,
in <code class="function">full_dispatch_request</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>self.try_trigger_before_first_request_functions()</pre>
<pre class="line before"><span class="ws"> </span>try:</pre>
<pre class="line before"><span class="ws"> </span>request_started.send(self)</pre>
<pre class="line before"><span class="ws"> </span>rv = self.preprocess_request()</pre>
<pre class="line before"><span class="ws"> </span>if rv is None:</pre>
<pre class="line current"><span class="ws"> </span>rv = self.dispatch_request()</pre>
<pre class="line after"><span class="ws"> </span>except Exception as e:</pre>
<pre class="line after"><span class="ws"> </span>rv = self.handle_user_exception(e)</pre>
<pre class="line after"><span class="ws"> </span>return self.finalize_request(rv)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def finalize_request(</pre></div>
</div>

<li><div class="frame" id="frame-2483053720336">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py"</cite>,
line <em class="line">1499</em>,
in <code class="function">dispatch_request</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>getattr(rule, "provide_automatic_options", False)</pre>
<pre class="line before"><span class="ws"> </span>and req.method == "OPTIONS"</pre>
<pre class="line before"><span class="ws"> </span>):</pre>
<pre class="line before"><span class="ws"> </span>return self.make_default_options_response()</pre>
<pre class="line before"><span class="ws"> </span># otherwise dispatch to the handler for that endpoint</pre>
<pre class="line current"><span class="ws"> </span>return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def full_dispatch_request(self) -> Response:</pre>
<pre class="line after"><span class="ws"> </span>"""Dispatches the request and on top of that performs request</pre>
<pre class="line after"><span class="ws"> </span>pre and postprocessing as well as HTTP exception catching and</pre>
<pre class="line after"><span class="ws"> </span>error handling.</pre></div>
</div>

<li><div class="frame" id="frame-2483053720400">
<h4>File <cite class="filename">"C:\Users\nick\Downloads\contact_app\app\routes.py"</cite>,
line <em class="line">38</em>,
in <code class="function">api_signup</code></h4>
<div class="source "><pre class="line before"><span class="ws"></span>@main.route('/api/signup', methods=['POST'])</pre>
<pre class="line before"><span class="ws"></span>def api_signup():</pre>
<pre class="line before"><span class="ws"> </span>data = request.get_json()</pre>
<pre class="line before"><span class="ws"> </span>user = User(email=data['email'], password=data['password'])</pre>
<pre class="line before"><span class="ws"> </span>db.session.add(user)</pre>
<pre class="line current"><span class="ws"> </span>db.session.commit()</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>msg = Message('Account Confirmation', sender='noreply@demo.com', recipients=[user.email])</pre>
<pre class="line after"><span class="ws"> </span>msg.body = 'Click the link to confirm your account: http://localhost:5000/confirm_account'</pre>
<pre class="line after"><span class="ws"> </span>mail.send(msg)</pre>
<pre class="line after"><span class="ws"></span> </pre></div>
</div>

<li><div class="frame" id="frame-2483053720464">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\scoping.py"</cite>,
line <em class="line">163</em>,
in <code class="function">do</code></h4>
<div class="source library"><pre class="line before"><span class="ws"></span>"""Old name for backwards compatibility."""</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"></span>def instrument(name):</pre>
<pre class="line before"><span class="ws"> </span>def do(self, *args, **kwargs):</pre>
<pre class="line current"><span class="ws"> </span>return getattr(self.registry(), name)(*args, **kwargs)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>return do</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"></span>for meth in Session.public_methods:</pre></div>
</div>

<li><div class="frame" id="frame-2483053720528">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\session.py"</cite>,
line <em class="line">1046</em>,
in <code class="function">commit</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>if not self.autocommit:</pre>
<pre class="line before"><span class="ws"> </span>self.begin()</pre>
<pre class="line before"><span class="ws"> </span>else:</pre>
<pre class="line before"><span class="ws"> </span>raise sa_exc.InvalidRequestError("No transaction is begun.")</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line current"><span class="ws"> </span>self.transaction.commit()</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def prepare(self):</pre>
<pre class="line after"><span class="ws"> </span>"""Prepare the current transaction in progress for two phase commit.</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>If no transaction is in progress, this method raises an</pre></div>
</div>

<li><div class="frame" id="frame-2483053720272">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\session.py"</cite>,
line <em class="line">504</em>,
in <code class="function">commit</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>self._state = PREPARED</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>def commit(self):</pre>
<pre class="line before"><span class="ws"> </span>self._assert_active(prepared_ok=True)</pre>
<pre class="line before"><span class="ws"> </span>if self._state is not PREPARED:</pre>
<pre class="line current"><span class="ws"> </span>self._prepare_impl()</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>if self._parent is None or self.nested:</pre>
<pre class="line after"><span class="ws"> </span>for t in set(self._connections.values()):</pre>
<pre class="line after"><span class="ws"> </span>t[1].commit()</pre>
<pre class="line after"><span class="ws"></span> </pre></div>
</div>

<li><div class="frame" id="frame-2483053720592">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\session.py"</cite>,
line <em class="line">483</em>,
in <code class="function">_prepare_impl</code></h4>
<div class="source library"><pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>if not self.session._flushing:</pre>
<pre class="line before"><span class="ws"> </span>for _flush_guard in range(100):</pre>
<pre class="line before"><span class="ws"> </span>if self.session._is_clean():</pre>
<pre class="line before"><span class="ws"> </span>break</pre>
<pre class="line current"><span class="ws"> </span>self.session.flush()</pre>
<pre class="line after"><span class="ws"> </span>else:</pre>
<pre class="line after"><span class="ws"> </span>raise exc.FlushError(</pre>
<pre class="line after"><span class="ws"> </span>"Over 100 subsequent flushes have occurred within "</pre>
<pre class="line after"><span class="ws"> </span>"session.commit() - is an after_flush() hook "</pre>
<pre class="line after"><span class="ws"> </span>"creating new objects?"</pre></div>
</div>

<li><div class="frame" id="frame-2483053720656">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\session.py"</cite>,
line <em class="line">2540</em>,
in <code class="function">flush</code></h4>
<div class="source library"><pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>if self._is_clean():</pre>
<pre class="line before"><span class="ws"> </span>return</pre>
<pre class="line before"><span class="ws"> </span>try:</pre>
<pre class="line before"><span class="ws"> </span>self._flushing = True</pre>
<pre class="line current"><span class="ws"> </span>self._flush(objects)</pre>
<pre class="line after"><span class="ws"> </span>finally:</pre>
<pre class="line after"><span class="ws"> </span>self._flushing = False</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def _flush_warning(self, method):</pre>
<pre class="line after"><span class="ws"> </span>util.warn(</pre></div>
</div>

<li><div class="frame" id="frame-2483053720720">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\session.py"</cite>,
line <em class="line">2681</em>,
in <code class="function">_flush</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>self.dispatch.after_flush_postexec(self, flush_context)</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>transaction.commit()</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>except:</pre>
<pre class="line current"><span class="ws"> </span>with util.safe_reraise():</pre>
<pre class="line after"><span class="ws"> </span>transaction.rollback(_capture_exception=True)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def bulk_save_objects(</pre>
<pre class="line after"><span class="ws"> </span>self,</pre>
<pre class="line after"><span class="ws"> </span>objects,</pre></div>
</div>

<li><div class="frame" id="frame-2483053720784">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\util\langhelpers.py"</cite>,
line <em class="line">68</em>,
in <code class="function">__exit__</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span># see #2703 for notes</pre>
<pre class="line before"><span class="ws"> </span>if type_ is None:</pre>
<pre class="line before"><span class="ws"> </span>exc_type, exc_value, exc_tb = self._exc_info</pre>
<pre class="line before"><span class="ws"> </span>self._exc_info = None # remove potential circular references</pre>
<pre class="line before"><span class="ws"> </span>if not self.warn_only:</pre>
<pre class="line current"><span class="ws"> </span>compat.raise_(</pre>
<pre class="line after"><span class="ws"> </span>exc_value,</pre>
<pre class="line after"><span class="ws"> </span>with_traceback=exc_tb,</pre>
<pre class="line after"><span class="ws"> </span>)</pre>
<pre class="line after"><span class="ws"> </span>else:</pre>
<pre class="line after"><span class="ws"> </span>if not compat.py3k and self._exc_info and self._exc_info[1]:</pre></div>
</div>

<li><div class="frame" id="frame-2483053720848">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\util\compat.py"</cite>,
line <em class="line">182</em>,
in <code class="function">raise_</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span># intermediary exception does not change, but we can't figure</pre>
<pre class="line before"><span class="ws"> </span># that out.</pre>
<pre class="line before"><span class="ws"> </span>exception.__cause__ = replace_context</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>try:</pre>
<pre class="line current"><span class="ws"> </span>raise exception</pre>
<pre class="line after"><span class="ws"> </span>finally:</pre>
<pre class="line after"><span class="ws"> </span># credit to</pre>
<pre class="line after"><span class="ws"> </span># https://cosmicpercolator.com/2016/01/13/exception-leaks-in-python-2-and-3/</pre>
<pre class="line after"><span class="ws"> </span># as the __traceback__ object creates a cycle</pre>
<pre class="line after"><span class="ws"> </span>del exception, replace_context, from_, with_traceback</pre></div>
</div>

<li><div class="frame" id="frame-2483053720912">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\session.py"</cite>,
line <em class="line">2642</em>,
in <code class="function">_flush</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>subtransactions=True</pre>
<pre class="line before"><span class="ws"> </span>)</pre>
<pre class="line before"><span class="ws"> </span>try:</pre>
<pre class="line before"><span class="ws"> </span>self._warn_on_events = True</pre>
<pre class="line before"><span class="ws"> </span>try:</pre>
<pre class="line current"><span class="ws"> </span>flush_context.execute()</pre>
<pre class="line after"><span class="ws"> </span>finally:</pre>
<pre class="line after"><span class="ws"> </span>self._warn_on_events = False</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>self.dispatch.after_flush(self, flush_context)</pre>
<pre class="line after"><span class="ws"></span> </pre></div>
</div>

<li><div class="frame" id="frame-2483053720976">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\unitofwork.py"</cite>,
line <em class="line">422</em>,
in <code class="function">execute</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>while set_:</pre>
<pre class="line before"><span class="ws"> </span>n = set_.pop()</pre>
<pre class="line before"><span class="ws"> </span>n.execute_aggregate(self, set_)</pre>
<pre class="line before"><span class="ws"> </span>else:</pre>
<pre class="line before"><span class="ws"> </span>for rec in topological.sort(self.dependencies, postsort_actions):</pre>
<pre class="line current"><span class="ws"> </span>rec.execute(self)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def finalize_flush_changes(self):</pre>
<pre class="line after"><span class="ws"> </span>"""Mark processed objects as clean / deleted after a successful</pre>
<pre class="line after"><span class="ws"> </span>flush().</pre>
<pre class="line after"><span class="ws"></span> </pre></div>
</div>

<li><div class="frame" id="frame-2483053721040">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\unitofwork.py"</cite>,
line <em class="line">586</em>,
in <code class="function">execute</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>def __init__(self, uow, mapper):</pre>
<pre class="line before"><span class="ws"> </span>self.mapper = mapper</pre>
<pre class="line before"><span class="ws"> </span>assert mapper is mapper.base_mapper</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>def execute(self, uow):</pre>
<pre class="line current"><span class="ws"> </span>persistence.save_obj(</pre>
<pre class="line after"><span class="ws"> </span>self.mapper,</pre>
<pre class="line after"><span class="ws"> </span>uow.states_for_mapper_hierarchy(self.mapper, False, False),</pre>
<pre class="line after"><span class="ws"> </span>uow,</pre>
<pre class="line after"><span class="ws"> </span>)</pre>
<pre class="line after"><span class="ws"></span> </pre></div>
</div>

<li><div class="frame" id="frame-2483053721104">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\persistence.py"</cite>,
line <em class="line">239</em>,
in <code class="function">save_obj</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>mapper,</pre>
<pre class="line before"><span class="ws"> </span>table,</pre>
<pre class="line before"><span class="ws"> </span>update,</pre>
<pre class="line before"><span class="ws"> </span>)</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line current"><span class="ws"> </span>_emit_insert_statements(</pre>
<pre class="line after"><span class="ws"> </span>base_mapper,</pre>
<pre class="line after"><span class="ws"> </span>uowtransaction,</pre>
<pre class="line after"><span class="ws"> </span>cached_connections,</pre>
<pre class="line after"><span class="ws"> </span>mapper,</pre>
<pre class="line after"><span class="ws"> </span>table,</pre></div>
</div>

<li><div class="frame" id="frame-2483053721168">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\persistence.py"</cite>,
line <em class="line">1135</em>,
in <code class="function">_emit_insert_statements</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>if value_params:</pre>
<pre class="line before"><span class="ws"> </span>result = connection.execute(</pre>
<pre class="line before"><span class="ws"> </span>statement.values(value_params), params</pre>
<pre class="line before"><span class="ws"> </span>)</pre>
<pre class="line before"><span class="ws"> </span>else:</pre>
<pre class="line current"><span class="ws"> </span>result = cached_connections[connection].execute(</pre>
<pre class="line after"><span class="ws"> </span>statement, params</pre>
<pre class="line after"><span class="ws"> </span>)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>primary_key = result.context.inserted_primary_key</pre>
<pre class="line after"><span class="ws"> </span>if primary_key is not None:</pre></div>
</div>

<li><div class="frame" id="frame-2483053721232">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\base.py"</cite>,
line <em class="line">1011</em>,
in <code class="function">execute</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>except AttributeError as err:</pre>
<pre class="line before"><span class="ws"> </span>util.raise_(</pre>
<pre class="line before"><span class="ws"> </span>exc.ObjectNotExecutableError(object_), replace_context=err</pre>
<pre class="line before"><span class="ws"> </span>)</pre>
<pre class="line before"><span class="ws"> </span>else:</pre>
<pre class="line current"><span class="ws"> </span>return meth(self, multiparams, params)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def _execute_function(self, func, multiparams, params):</pre>
<pre class="line after"><span class="ws"> </span>"""Execute a sql.FunctionElement object."""</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>return self._execute_clauseelement(func.select(), multiparams, params)</pre></div>
</div>

<li><div class="frame" id="frame-2483053721296">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\sql\elements.py"</cite>,
line <em class="line">298</em>,
in <code class="function">_execute_on_connection</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span># self</pre>
<pre class="line before"><span class="ws"> </span>return self</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>def _execute_on_connection(self, connection, multiparams, params):</pre>
<pre class="line before"><span class="ws"> </span>if self.supports_execution:</pre>
<pre class="line current"><span class="ws"> </span>return connection._execute_clauseelement(self, multiparams, params)</pre>
<pre class="line after"><span class="ws"> </span>else:</pre>
<pre class="line after"><span class="ws"> </span>raise exc.ObjectNotExecutableError(self)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def unique_params(self, *optionaldict, **kwargs):</pre>
<pre class="line after"><span class="ws"> </span>"""Return a copy with :func:_expression.bindparam elements</pre></div>
</div>

<li><div class="frame" id="frame-2483053721360">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\base.py"</cite>,
line <em class="line">1124</em>,
in <code class="function">_execute_clauseelement</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>schema_translate_map=self.schema_for_object</pre>
<pre class="line before"><span class="ws"> </span>if not self.schema_for_object.is_default</pre>
<pre class="line before"><span class="ws"> </span>else None,</pre>
<pre class="line before"><span class="ws"> </span>)</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line current"><span class="ws"> </span>ret = self._execute_context(</pre>
<pre class="line after"><span class="ws"> </span>dialect,</pre>
<pre class="line after"><span class="ws"> </span>dialect.execution_ctx_cls._init_compiled,</pre>
<pre class="line after"><span class="ws"> </span>compiled_sql,</pre>
<pre class="line after"><span class="ws"> </span>distilled_params,</pre>
<pre class="line after"><span class="ws"> </span>compiled_sql,</pre></div>
</div>

<li><div class="frame" id="frame-2483053721424">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\base.py"</cite>,
line <em class="line">1316</em>,
in <code class="function">_execute_context</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span># ResultProxy will close this Connection when no more</pre>
<pre class="line before"><span class="ws"> </span># rows to fetch.</pre>
<pre class="line before"><span class="ws"> </span>result._autoclose_connection = True</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>except BaseException as e:</pre>
<pre class="line current"><span class="ws"> </span>self._handle_dbapi_exception(</pre>
<pre class="line after"><span class="ws"> </span>e, statement, parameters, cursor, context</pre>
<pre class="line after"><span class="ws"> </span>)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>return result</pre>
<pre class="line after"><span class="ws"></span> </pre></div>
</div>

<li><div class="frame" id="frame-2483053721488">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\base.py"</cite>,
line <em class="line">1510</em>,
in <code class="function">_handle_dbapi_exception</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>self._autorollback()</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>if newraise:</pre>
<pre class="line before"><span class="ws"> </span>util.raise_(newraise, with_traceback=exc_info[2], from_=e)</pre>
<pre class="line before"><span class="ws"> </span>elif should_wrap:</pre>
<pre class="line current"><span class="ws"> </span>util.raise_(</pre>
<pre class="line after"><span class="ws"> </span>sqlalchemy_exception, with_traceback=exc_info[2], from_=e</pre>
<pre class="line after"><span class="ws"> </span>)</pre>
<pre class="line after"><span class="ws"> </span>else:</pre>
<pre class="line after"><span class="ws"> </span>util.raise_(exc_info[1], with_traceback=exc_info[2])</pre>
<pre class="line after"><span class="ws"></span> </pre></div>
</div>

<li><div class="frame" id="frame-2483053721552">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\util\compat.py"</cite>,
line <em class="line">182</em>,
in <code class="function">raise_</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span># intermediary exception does not change, but we can't figure</pre>
<pre class="line before"><span class="ws"> </span># that out.</pre>
<pre class="line before"><span class="ws"> </span>exception.__cause__ = replace_context</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>try:</pre>
<pre class="line current"><span class="ws"> </span>raise exception</pre>
<pre class="line after"><span class="ws"> </span>finally:</pre>
<pre class="line after"><span class="ws"> </span># credit to</pre>
<pre class="line after"><span class="ws"> </span># https://cosmicpercolator.com/2016/01/13/exception-leaks-in-python-2-and-3/</pre>
<pre class="line after"><span class="ws"> </span># as the __traceback__ object creates a cycle</pre>
<pre class="line after"><span class="ws"> </span>del exception, replace_context, from_, with_traceback</pre></div>
</div>

<li><div class="frame" id="frame-2483053721616">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\base.py"</cite>,
line <em class="line">1276</em>,
in <code class="function">_execute_context</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>for fn in self.dialect.dispatch.do_execute:</pre>
<pre class="line before"><span class="ws"> </span>if fn(cursor, statement, parameters, context):</pre>
<pre class="line before"><span class="ws"> </span>evt_handled = True</pre>
<pre class="line before"><span class="ws"> </span>break</pre>
<pre class="line before"><span class="ws"> </span>if not evt_handled:</pre>
<pre class="line current"><span class="ws"> </span>self.dialect.do_execute(</pre>
<pre class="line after"><span class="ws"> </span>cursor, statement, parameters, context</pre>
<pre class="line after"><span class="ws"> </span>)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>if self._has_events or self.engine._has_events:</pre>
<pre class="line after"><span class="ws"> </span>self.dispatch.after_cursor_execute(</pre></div>
</div>

<li><div class="frame" id="frame-2483032878928">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\default.py"</cite>,
line <em class="line">608</em>,
in <code class="function">do_execute</code></h4>
<div class="source library"><pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>def do_executemany(self, cursor, statement, parameters, context=None):</pre>
<pre class="line before"><span class="ws"> </span>cursor.executemany(statement, parameters)</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>def do_execute(self, cursor, statement, parameters, context=None):</pre>
<pre class="line current"><span class="ws"> </span>cursor.execute(statement, parameters)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def do_execute_no_params(self, cursor, statement, context=None):</pre>
<pre class="line after"><span class="ws"> </span>cursor.execute(statement)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def is_disconnect(self, e, connection, cursor):</pre></div>
</div>
</ul>
<blockquote>sqlalchemy.exc.IntegrityError: (sqlite3.IntegrityError) UNIQUE constraint failed: user.email
[SQL: INSERT INTO user (email, password, created_at) VALUES (?, ?, ?)]
[parameters: ('nick@guitarz.org', '7u8i-9o0P', '2024-07-27 13:14:22.784848')]
(Background on this error at: http://sqlalche.me/e/13/gkpj)</blockquote>
</div>

<div class="plain">
<p>
This is the Copy/Paste friendly version of the traceback.
</p>
<textarea cols="50" rows="10" name="code" readonly>Traceback (most recent call last):
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\base.py", line 1276, in _execute_context
self.dialect.do_execute(
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\default.py", line 608, in do_execute
cursor.execute(statement, parameters)
sqlite3.IntegrityError: UNIQUE constraint failed: user.email

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 2088, in __call__
return self.wsgi_app(environ, start_response)
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 2073, in wsgi_app
response = self.handle_exception(e)
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 2070, in wsgi_app
response = self.full_dispatch_request()
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 1515, in full_dispatch_request
rv = self.handle_user_exception(e)
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 1513, in full_dispatch_request
rv = self.dispatch_request()
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 1499, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
File "C:\Users\nick\Downloads\contact_app\app\routes.py", line 38, in api_signup
db.session.commit()
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\scoping.py", line 163, in do
return getattr(self.registry(), name)(*args, **kwargs)
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\session.py", line 1046, in commit
self.transaction.commit()
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\session.py", line 504, in commit
self._prepare_impl()
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\session.py", line 483, in _prepare_impl
self.session.flush()
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\session.py", line 2540, in flush
self._flush(objects)
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\session.py", line 2681, in _flush
with util.safe_reraise():
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\util\langhelpers.py", line 68, in __exit__
compat.raise_(
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\util\compat.py", line 182, in raise_
raise exception
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\session.py", line 2642, in _flush
flush_context.execute()
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\unitofwork.py", line 422, in execute
rec.execute(self)
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\unitofwork.py", line 586, in execute
persistence.save_obj(
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\persistence.py", line 239, in save_obj
_emit_insert_statements(
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\orm\persistence.py", line 1135, in _emit_insert_statements
result = cached_connections[connection].execute(
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\base.py", line 1011, in execute
return meth(self, multiparams, params)
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\sql\elements.py", line 298, in _execute_on_connection
return connection._execute_clauseelement(self, multiparams, params)
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\base.py", line 1124, in _execute_clauseelement
ret = self._execute_context(
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\base.py", line 1316, in _execute_context
self._handle_dbapi_exception(
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\base.py", line 1510, in _handle_dbapi_exception
util.raise_(
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\util\compat.py", line 182, in raise_
raise exception
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\base.py", line 1276, in _execute_context
self.dialect.do_execute(
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\default.py", line 608, in do_execute
cursor.execute(statement, parameters)
sqlalchemy.exc.IntegrityError: (sqlite3.IntegrityError) UNIQUE constraint failed: user.email
[SQL: INSERT INTO user (email, password, created_at) VALUES (?, ?, ?)]
[parameters: ('nick@guitarz.org', '7u8i-9o0P', '2024-07-27 13:14:22.784848')]
(Background on this error at: http://sqlalche.me/e/13/gkpj)</textarea>
</div>
<div class="explanation">
The debugger caught an exception in your WSGI application. You can now
look at the traceback which led to the error. <span class="nojavascript">
If you enable JavaScript you can also use additional features such as code
execution (if the evalex feature is enabled), automatic pasting of the
exceptions and much more.</span>
</div>
<div class="footer">
Brought to you by <strong class="arthur">DON'T PANIC</strong>, your
friendly Werkzeug powered traceback interpreter.
</div>
</div>

<div class="pin-prompt">
<div class="inner">
<h3>Console Locked</h3>
<p>
The console is locked and needs to be unlocked by entering the PIN.
You can find the PIN printed out on the standard output of your
shell that runs the server.
<form>
<p>PIN:
<input type=text name=pin size=14>
<input type=submit name=btn value="Confirm Pin">
</form>
</div>
</div>
</body>
</html>

<!--

Traceback (most recent call last):
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\base.py", line 1276, in _execute_context
self.dialect.do_execute(
File "C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\default.py", line 608, in do_execute
cursor.execute(statement, parameters)
sqlite3.IntegrityError: UNIQUE constraint failed: user.email

The above exception was the direct cause of the following exception:

-->

The error message indicates that there is a UNIQUE constraint violation on the user.email field, which means that the email nick@guitarz.org already exists in the database. To handle this more gracefully, we should check if the email already exists before attempting to create a new user.

Step 1: Update the Signup Route to Check for Existing Users
Modify the api_signup function to check if the email already exists and return an appropriate response.

app/routes.py
from flask import request, jsonify
from app import db, mail
from app.models import User
from flask_mail import Message
from datetime import datetime

@main.route('/api/signup', methods=['POST'])
def api_signup():
data = request.get_json()
existing_user = User.query.filter_by(email=data['email']).first()
if existing_user:
return jsonify({'message': 'Email already exists!'}), 400

user = User(email=data['email'], password=data['password'], created_at=datetime.utcnow())
db.session.add(user)
db.session.commit()

msg = Message('Account Confirmation', sender='noreply@demo.com', recipients=[user.email])
msg.body = 'Click the link to confirm your account: http://localhost:5000/confirm_account'
mail.send(msg)

return jsonify({'message': 'Sign up successful! Please check your email to confirm your account.'}), 201
Step 2: Handle Different Response Statuses in Brython Script
Update the Brython script to handle different response statuses and show appropriate messages.

app/static/js/login.py
from browser import document, ajax, console, window

console.log("Brython script is running")

def on_complete(req):
console.log("Request completed with status", req.status)
console.log("Response text:", req.text)
if req.status == 200 or req.status == 201:
data = window.JSON.parse(req.text)
window.alert(data['message'])
else:
data = window.JSON.parse(req.text)
window.alert(f"Request failed: {req.status} - {data['message']}")

def send_forgot_password_request(event):
event.preventDefault() # Prevent the default form submission
console.log("Forgot password form submitted")
email = document["forgot_email"].value
data = {"email": email}
send_request("/api/forgot_password", data, "If that email address exists in our system, a reset link has been sent!")

python run.py
Step 4: Test the Signup Form Again
Open the browser's developer tools (F12 or right-click and select "Inspect") and go to the "Console" tab.

Navigate to the signup page.

Fill in the email and password fields with an email that already exists in the database.

Click the "Sign Up" button.

Observe the console logs and alerts to see if the appropriate message is shown when attempting to sign up with an existing email.

By adding a check for existing users and handling different response statuses in the Brython script, you should be able to provide a more user-friendly experience and avoid integrity errors. If you encounter any specific errors or logs, please share them, and we can further troubleshoot the problem.

The error NameError: name 'main' is not defined suggests that the main blueprint was not correctly imported or initialized in your routes.py file.

Let's fix this by ensuring that the main blueprint is properly imported and registered in your application.

Step 1: Update the routes.py File
Ensure that the main blueprint is imported from app and initialized correctly.

app/routes.py
from flask import Blueprint, request, jsonify
from app import db, mail
from app.models import User
from flask_mail import Message
from datetime import datetime

main = Blueprint('main', __name__)

msg = Message('Account Confirmation', sender='noreply@demo.com', recipients=[user.email])
msg.body = 'Click the link to confirm your account: http://localhost:5000/confirm_account'
mail.send(msg)

return jsonify({'message': 'Sign up successful! Please check your email to confirm your account.'}), 201

@main.route('/api/login', methods=['POST'])
def api_login():
data = request.get_json()
user = User.query.filter_by(email=data['email']).first()
if user and user.password == data['password']:
return jsonify({'message': 'Login successful!'}), 200
return jsonify({'message': 'Invalid email or password!'}), 401
Step 2: Update the __init__.py File to Register the Blueprint
Ensure that the main blueprint is registered with the Flask application.

app/__init__.py
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_mail import Mail
from config import Config

db = SQLAlchemy()
mail = Mail()

def create_app(config_class=Config):
app = Flask(__name__)
app.config.from_object(config_class)

db.init_app(app)
mail.init_app(app)

from app.routes import main
app.register_blueprint(main)

return app
Step 3: Restart the Flask Application
Restart the Flask application to apply the changes:

python run.py
Step 4: Test the Signup Form Again
Open the browser's developer tools (F12 or right-click and select "Inspect") and go to the "Console" tab.

Navigate to the signup page.

Fill in the email and password fields.

Click the "Sign Up" button.

Observe the console logs and alerts to see if the form submission is correctly handled.

By ensuring that the main blueprint is correctly imported and registered, the NameError should be resolved, and the application should run without errors. If you encounter any further issues, please share the specific error messages, and we can continue troubleshooting.

Failed to load resource: the server responded with a status of 404 (NOT FOUND)Understand this error
favicon.ico:1

Failed to load resource: the server responded with a status of 404 (NOT FOUND)

The 404 (NOT FOUND) error for the favicon.ico is a common issue when the browser automatically requests a favicon for the website and it isn't provided. This issue won't affect the functionality of the signup or login forms, but you can easily resolve it by adding a simple favicon to your project.

Step 1: Add a Favicon to Your Project
Create or download a favicon: You can create a favicon using various online tools or download one.

Save the favicon file: Name the file favicon.ico and place it in the static directory of your project.

Step 2: Update the HTML to Include the Favicon
Ensure that your HTML includes a reference to the favicon. This is typically done in the <head> section of your HTML file.

templates/login.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Login</title>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython.min.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython_stdlib.js"></script>
<link rel="icon" href="{{ url_for('static', filename='favicon.ico') }}" type="image/x-icon">
</head>
<body onload="brython()">

</body>
</html>
templates/signup.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Sign Up</title>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython.min.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython_stdlib.js"></script>
<link rel="icon" href="{{ url_for('static', filename='favicon.ico') }}" type="image/x-icon">
</head>
<body onload="brython()">

</body>
</html>
Step 3: Restart the Flask Application
Restart your Flask application to apply the changes:

python run.py
Step 4: Test the Forms
Open the browser's developer tools (F12 or right-click and select "Inspect") and go to the "Console" tab.

Navigate to the signup page.

Fill in the email and password fields.

Click the "Sign Up" button.

Observe the console logs and alerts to see if the form submission is correctly handled.

By adding a favicon to your project, you should no longer see the 404 (NOT FOUND) error for the favicon.ico file. This change won't affect the functionality of your signup or login forms, but it will provide a more polished user experience.

please provide the complete code for the login.html and signup.html files

Sure, here are the complete login.html and signup.html files including the necessary form elements, Brython script references, and the favicon link.

login.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Login</title>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython.min.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython_stdlib.js"></script>
<link rel="icon" href="{{ url_for('static', filename='favicon.ico') }}" type="image/x-icon">
</head>
<body onload="brython()">
<div class="container mt-4">
<h2 class="text-center">Login</h2>
<form id="login-form" class="form">
<div class="form-group">
<label for="email">Email:</label>
<input type="email" id="email" class="form-control" required>
</div>
<div class="form-group">
<label for="password">Password:</label>
<input type="password" id="password" class="form-control" required>
</div>
<button type="submit" class="btn btn-primary">Login</button>
</form>
<div class="mt-3">
<a href="/signup">Create a new account</a> | <a href="/forgot_password">Forgot password?</a>
</div>
</div>
<script type="text/python" src="{{ url_for('static', filename='js/login.py') }}"></script>
</body>
</html>
signup.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Sign Up</title>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython.min.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/brython@3.11.0/brython_stdlib.js"></script>
<link rel="icon" href="{{ url_for('static', filename='favicon.ico') }}" type="image/x-icon">
</head>
<body onload="brython()">
<div class="container mt-4">
<h2 class="text-center">Sign Up</h2>
<form id="signup-form" class="form">
<div class="form-group">
<label for="signup_email">Email:</label>
<input type="email" id="signup_email" class="form-control" required>
</div>
<div class="form-group">
<label for="signup_password">Password:</label>
<input type="password" id="signup_password" class="form-control" required>
</div>
<button type="submit" class="btn btn-primary">Sign Up</button>
</form>
</div>
<script type="text/python" src="{{ url_for('static', filename='js/login.py') }}"></script>
</body>
</html>
JavaScript (Brython) File: login.py
This file should be placed in the static/js directory.

static/js/login.py
from browser import document, ajax, console, window

console.log("Brython script is running")

def on_complete(req):
console.log("Request completed with status", req.status)
console.log("Response text:", req.text)
if req.status == 200 or req.status == 201:
data = window.JSON.parse(req.text)
window.alert(data['message'])
else:
try:
data = window.JSON.parse(req.text)
window.alert(f"Request failed: {req.status} - {data['message']}")
except:
window.alert(f"Request failed: {req.status}")

def send_forgot_password_request(event):
event.preventDefault() # Prevent the default form submission
console.log("Forgot password form submitted")
email = document["forgot_email"].value
data = {"email": email}
send_request("/api/forgot_password", data, "If that email address exists in our system, a reset link has been sent!")

# Attach event handlers directly
console.log("Attaching event handlers")
if document.getElementById("login-form"):
document.getElementById("login-form").bind("submit", send_login_request)
console.log("Login form handler attached")
if document.getElementById("signup-form"):
document.getElementById("signup-form").bind("submit", send_signup_request)
console.log("Signup form handler attached")
if document.getElementById("forgot-password-form"):
document.getElementById("forgot-password-form").bind("submit", send_forgot_password_request)
console.log("Forgot password form handler attached")
With these complete login.html and signup.html files, along with the login.py Brython script, your forms should be fully functional. If there are still issues, please share any specific error messages or behavior you're observing, and we can further troubleshoot.

The 404 - Not Found error indicates that the /signup route is not found. This is likely due to a missing route definition in your Flask application.

Step 1: Ensure Routes Are Defined in routes.py
Ensure you have defined the route for /signup in your routes.py.

app/routes.py
Add the following routes if they are not already present:

from flask import Blueprint, request, jsonify, render_template
from app import db, mail
from app.models import User
from flask_mail import Message
from datetime import datetime

main = Blueprint('main', __name__)

# Render the signup page
@main.route('/signup')
def signup():
return render_template('signup.html')

# Render the login page
@main.route('/')
def login():
return render_template('login.html')

# API route for signup
@main.route('/api/signup', methods=['POST'])
def api_signup():
data = request.get_json()
existing_user = User.query.filter_by(email=data['email']).first()
if existing_user:
return jsonify({'message': 'Email already exists!'}), 400

user = User(email=data['email'], password=data['password'], created_at=datetime.utcnow())
db.session.add(user)
db.session.commit()

msg = Message('Account Confirmation', sender='noreply@demo.com', recipients=[user.email])
msg.body = 'Click the link to confirm your account: http://localhost:5000/confirm_account'
mail.send(msg)

return jsonify({'message': 'Sign up successful! Please check your email to confirm your account.'}), 201

# API route for login
@main.route('/api/login', methods=['POST'])
def api_login():
data = request.get_json()
user = User.query.filter_by(email=data['email']).first()
if user and user.password == data['password']:
return jsonify({'message': 'Login successful!'}), 200
return jsonify({'message': 'Invalid email or password!'}), 401
Step 2: Ensure the Blueprint is Registered in __init__.py
Ensure that the main blueprint is registered in your Flask application.

app/__init__.py
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_mail import Mail
from config import Config

db = SQLAlchemy()
mail = Mail()

def create_app(config_class=Config):
app = Flask(__name__)
app.config.from_object(config_class)

db.init_app(app)
mail.init_app(app)

from app.routes import main
app.register_blueprint(main)

return app
Step 3: Restart the Flask Application
Restart your Flask application to apply the changes:

python run.py
Step 4: Ensure the Directory Structure
Ensure your directory structure looks something like this:

contact_app/
run.py
app/
__init__.py
routes.py
models.py
templates/
login.html
signup.html
static/
js/
login.py
favicon.ico
config.py
Step 5: Test the Signup and Login Pages
Open your browser and navigate to http://127.0.0.1:5000/ for the login page.

Click on "Create a new account" to go to http://127.0.0.1:5000/signup.

With these changes, the /signup route should be properly defined and accessible. If you continue to encounter issues, please share the specific error messages or behavior you are observing.

Request completed with status 400
brython.min.js:1 Response text: {
"message": "Email already exists!"
}

brython.min.js:1 Signup form submitted
brython.min.js:1 Sending request to /api/signup with data {email: 'user@guitarz.org', password: '7u8i-9o0P'}

There was no alert message after the console log said the email had been sent. The user never received the signup email.

The console output indicates that the signup attempt was unsuccessful due to the "Email already exists!" message. This means that the application is correctly preventing duplicate signups. However, the alert message did not display, and the user did not receive the signup email.

Step 1: Fix Alert Message Display
Ensure that the alert messages are correctly displayed in the browser using the window.alert function. The alert message should be shown when the status is 400.

Step 2: Check Email Sending
Verify the email sending configuration in your Flask application. If the email isn't sent, there might be an issue with the mail server configuration or the message construction.

Adjusting login.py for Alert Message
Here's how you can adjust login.py to ensure alert messages are displayed:

static/js/login.py
from browser import document, ajax, console, window

console.log("Brython script is running")

def on_complete(req):
console.log("Request completed with status", req.status)
console.log("Response text:", req.text)
try:
data = window.JSON.parse(req.text)
if req.status == 200 or req.status == 201:
window.alert(data['message'])
else:
window.alert(f"Request failed: {req.status} - {data['message']}")
except:
window.alert(f"Request failed: {req.status} - {req.text}")

def send_forgot_password_request(event):
event.preventDefault() # Prevent the default form submission
console.log("Forgot password form submitted")
email = document["forgot_email"].value
data = {"email": email}
send_request("/api/forgot_password", data, "If that email address exists in our system, a reset link has been sent!")

# Attach event handlers directly
console.log("Attaching event handlers")
if document.getElementById("login-form"):
document.getElementById("login-form").bind("submit", send_login_request)
console.log("Login form handler attached")
if document.getElementById("signup-form"):
document.getElementById("signup-form").bind("submit", send_signup_request)
console.log("Signup form handler attached")
if document.getElementById("forgot-password-form"):
document.getElementById("forgot-password-form").bind("submit", send_forgot_password_request)
console.log("Forgot password form handler attached")
Verify Email Sending Configuration
Ensure your Flask app is properly configured to send emails. Check your config.py for the correct email settings.

config.py
import os

class Config:
SECRET_KEY = os.environ.get('SECRET_KEY') or 'you-will-never-guess'
SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL') or 'sqlite:///site.db'
MAIL_SERVER = 'smtp.googlemail.com'
MAIL_PORT = 587
MAIL_USE_TLS = True
MAIL_USERNAME = os.environ.get('EMAIL_USER') # Set this in your environment variables
MAIL_PASSWORD = os.environ.get('EMAIL_PASS') # Set this in your environment variables
MAIL_DEFAULT_SENDER = 'noreply@demo.com'
Verify SMTP Configuration
Ensure the environment variables for EMAIL_USER and EMAIL_PASS are set correctly. You can set these variables in your terminal or command prompt before running your Flask app.

Setting Environment Variables
For Windows Command Prompt:

set EMAIL_USER=your-email@gmail.com
set EMAIL_PASS=your-email-password
For Linux/Mac or Windows PowerShell:

export EMAIL_USER=your-email@gmail.com
export EMAIL_PASS=your-email-password
Step 3: Debug Email Sending
Check if there are any exceptions raised during the email sending process. Add logging to help diagnose any issues.

Update routes.py to Include Logging
import logging

msg = Message('Account Confirmation', sender='noreply@demo.com', recipients=[user.email])
msg.body = 'Click the link to confirm your account: http://localhost:5000/confirm_account'

try:
mail.send(msg)
except Exception as e:
logging.error(f"Failed to send email: {e}")
return jsonify({'message': 'Failed to send confirmation email. Please try again later.'}), 500

return jsonify({'message': 'Sign up successful! Please check your email to confirm your account.'}), 201
With these steps, the alert message should display properly, and any issues with sending the confirmation email will be logged, helping you to diagnose the problem. If the email sending fails, you should see the error message in your console or log file.

127.0.0.1 - - [27/Jul/2024 09:30:33] "GET /static/js/login.py?1722087033788 HTTP/1.1" 200 -
127.0.0.1 - - [27/Jul/2024 09:30:37] "GET /signup HTTP/1.1" 200 -
127.0.0.1 - - [27/Jul/2024 09:30:37] "GET /static/js/login.py?1722087037620 HTTP/1.1" 200 -

Sending request to /api/signup with data {email: '<correct email>', password: '<correct password>'}

no email has been received. I know my email setup requires SMTP 465 ssl encryption

Given your email setup requires SMTP on port 465 with SSL encryption, you will need to adjust the Flask-Mail configuration accordingly. Here's how you can do it:

Step 1: Update Email Configuration
config.py
Update your mail server configuration to use port 465 and enable SSL encryption.

import os

class Config:
SECRET_KEY = os.environ.get('SECRET_KEY') or 'you-will-never-guess'
SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL') or 'sqlite:///site.db'
MAIL_SERVER = 'smtp.your-email-provider.com' # Replace with your SMTP server
MAIL_PORT = 465
MAIL_USE_SSL = True
MAIL_USE_TLS = False # Ensure this is False if you're using SSL
MAIL_USERNAME = os.environ.get('EMAIL_USER') # Set this in your environment variables
MAIL_PASSWORD = os.environ.get('EMAIL_PASS') # Set this in your environment variables
MAIL_DEFAULT_SENDER = 'noreply@yourdomain.com' # Replace with your sender email
Step 2: Set Environment Variables
Make sure your environment variables are correctly set.

For Windows Command Prompt:

set EMAIL_USER=your-email@gmail.com
set EMAIL_PASS=your-email-password
For Linux/Mac or Windows PowerShell:

export EMAIL_USER=your-email@gmail.com
export EMAIL_PASS=your-email-password
Step 3: Verify Flask-Mail Configuration
Check if the Flask-Mail configuration is correctly applied in your application.

app/__init__.py
Ensure that Flask-Mail is initialized correctly.

from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_mail import Mail
from config import Config

db = SQLAlchemy()
mail = Mail()

def create_app(config_class=Config):
app = Flask(__name__)
app.config.from_object(config_class)

db.init_app(app)
mail.init_app(app)

from app.routes import main
app.register_blueprint(main)

return app
Step 4: Add Debugging for Email Sending
Add debugging information to ensure the email sending process is correctly executed.

app/routes.py
Add detailed logging for the email sending process.

import logging

msg = Message('Account Confirmation', sender='noreply@yourdomain.com', recipients=[user.email])
msg.body = 'Click the link to confirm your account: http://localhost:5000/confirm_account'

try:
mail.send(msg)
logging.info(f"Confirmation email sent to {user.email}")
except Exception as e:
logging.error(f"Failed to send email: {e}")
return jsonify({'message': 'Failed to send confirmation email. Please try again later.'}), 500

return jsonify({'message': 'Sign up successful! Please check your email to confirm your account.'}), 201
Step 5: Restart Your Flask Application
Restart your Flask application to apply the changes:

python run.py
Step 6: Monitor Logs
Check the logs to ensure that the email is being sent correctly. Look for the Confirmation email sent to ... message or any errors that might occur during the email sending process.

With these steps, your application should be configured to use SMTP with SSL on port 465, and any issues with email sending should be logged for easier debugging. If you still face issues, please share the specific error messages from the logs.

Sending request to /api/signup with data {email: '<correct email>', password: '<correct password>'}
brython.min.js:1 Request completed with status 201
brython.min.js:1 Response text: {
"message": "Sign up successful! Please check your email to confirm your account."
}

At http://localhost:5000/confirm_account this is displayed:

Not Found
The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again.

The Not Found error for the /confirm_account URL indicates that the route for account confirmation has not been defined in your Flask application. Let's define the route and create the corresponding handler.

Step 1: Define the Confirm Account Route
Add a new route to handle account confirmation in routes.py.

app/routes.py
Add the following code to handle account confirmation:

@main.route('/confirm_account')
def confirm_account():
token = request.args.get('token')
if not token:
return jsonify({'message': 'Missing token'}), 400

# Implement token validation logic here (e.g., using itsdangerous or JWT)
# For simplicity, we'll assume the token is valid and retrieve the user

user = User.query.filter_by(email='user_email_extracted_from_token').first() # Replace with actual token extraction logic
if not user:
return jsonify({'message': 'Invalid or expired token'}), 400

user.confirmed = True
db.session.commit()

return jsonify({'message': 'Account confirmed successfully!'}), 200
Step 2: Generate and Send Confirmation Tokens
Modify the signup route to generate a token and send it in the confirmation email. You can use itsdangerous for this purpose.

Install itsdangerous
If you haven't already, install the itsdangerous package:

pip install itsdangerous
Update routes.py
Update the signup route to generate and send a confirmation token.

from itsdangerous import URLSafeTimedSerializer

# Initialize the serializer
serializer = URLSafeTimedSerializer(app.config['SECRET_KEY'])

# Generate a confirmation token
token = serializer.dumps(user.email, salt='email-confirmation-salt')

msg = Message('Account Confirmation', sender='noreply@yourdomain.com', recipients=[user.email])
confirm_url = url_for('main.confirm_account', token=token, _external=True)
msg.body = f'Click the link to confirm your account: {confirm_url}'

try:
mail.send(msg)
logging.info(f"Confirmation email sent to {user.email}")
except Exception as e:
logging.error(f"Failed to send email: {e}")
return jsonify({'message': 'Failed to send confirmation email. Please try again later.'}), 500

return jsonify({'message': 'Sign up successful! Please check your email to confirm your account.'}), 201
Step 3: Update the User Model
Ensure the User model has a confirmed field to track account confirmation status.

app/models.py
from app import db

class User(db.Model):
id = db.Column(db.Integer, primary_key=True)
email = db.Column(db.String(120), unique=True, nullable=False)
password = db.Column(db.String(60), nullable=False)
created_at = db.Column(db.DateTime, nullable=False, default=datetime.utcnow)
confirmed = db.Column(db.Boolean, nullable=False, default=False)
Step 4: Handle Token Validation
Update the confirm_account route to handle token validation.

Update routes.py
@main.route('/confirm_account')
def confirm_account():
token = request.args.get('token')
if not token:
return jsonify({'message': 'Missing token'}), 400

try:
email = serializer.loads(token, salt='email-confirmation-salt', max_age=3600) # Token valid for 1 hour
except Exception as e:
return jsonify({'message': 'Invalid or expired token'}), 400

user = User.query.filter_by(email=email).first()
if not user:
return jsonify({'message': 'User not found'}), 400

user.confirmed = True
db.session.commit()

return jsonify({'message': 'Account confirmed successfully!'}), 200
Step 5: Restart Your Flask Application
Restart your Flask application to apply the changes:

python run.py
With these changes, your application should handle account confirmation by generating a token during signup, sending it via email, and validating the token when the user accesses the confirmation link.

please provide the complete code for routes.py with all the suggested changes. My current file before the changes integrated is:

from flask import Blueprint, request, jsonify, render_template
from app import db, mail
from app.models import User
from flask_mail import Message
from datetime import datetime

main = Blueprint('main', __name__)

# Render the signup page
@main.route('/signup')
def signup():
return render_template('signup.html')

# Render the login page
@main.route('/')
def login():
return render_template('login.html')

msg = Message('Account Confirmation', sender='noreply@demo.com', recipients=[user.email])
msg.body = 'Click the link to confirm your account: http://localhost:5000/confirm_account'
mail.send(msg)

return jsonify({'message': 'Sign up successful! Please check your email to confirm your account.'}), 201

# API route for login
@main.route('/api/login', methods=['POST'])
def api_login():
data = request.get_json()
user = User.query.filter_by(email=data['email']).first()
if user and user.password == data['password']:
return jsonify({'message': 'Login successful!'}), 200
return jsonify({'message': 'Invalid email or password!'}), 401

@main.route('/confirm_account')
def confirm_account():
token = request.args.get('token')
if not token:
return jsonify({'message': 'Missing token'}), 400

# Implement token validation logic here (e.g., using itsdangerous or JWT)
# For simplicity, we'll assume the token is valid and retrieve the user

user = User.query.filter_by(email='user_email_extracted_from_token').first() # Replace with actual token extraction logic
if not user:
return jsonify({'message': 'Invalid or expired token'}), 400

user.confirmed = True
db.session.commit()

return jsonify({'message': 'Account confirmed successfully!'}), 200

Here's the complete routes.py file with all the suggested changes integrated:

from flask import Blueprint, request, jsonify, render_template, url_for
from app import db, mail
from app.models import User
from flask_mail import Message
from datetime import datetime
from itsdangerous import URLSafeTimedSerializer

main = Blueprint('main', __name__)

# Initialize the serializer
serializer = URLSafeTimedSerializer('your-secret-key') # Replace with your actual secret key

# Render the signup page
@main.route('/signup')
def signup():
return render_template('signup.html')

# Render the login page
@main.route('/')
def login():
return render_template('login.html')

# Generate a confirmation token
token = serializer.dumps(user.email, salt='email-confirmation-salt')

msg = Message('Account Confirmation', sender='noreply@yourdomain.com', recipients=[user.email])
confirm_url = url_for('main.confirm_account', token=token, _external=True)
msg.body = f'Click the link to confirm your account: {confirm_url}'

try:
mail.send(msg)
except Exception as e:
return jsonify({'message': f'Failed to send confirmation email. Please try again later. Error: {e}'}), 500

return jsonify({'message': 'Sign up successful! Please check your email to confirm your account.'}), 201

# API route for login
@main.route('/api/login', methods=['POST'])
def api_login():
data = request.get_json()
user = User.query.filter_by(email=data['email']).first()
if user and user.password == data['password']:
return jsonify({'message': 'Login successful!'}), 200
return jsonify({'message': 'Invalid email or password!'}), 401

# Route for account confirmation
@main.route('/confirm_account')
def confirm_account():
token = request.args.get('token')
if not token:
return jsonify({'message': 'Missing token'}), 400

try:
email = serializer.loads(token, salt='email-confirmation-salt', max_age=3600) # Token valid for 1 hour
except Exception as e:
return jsonify({'message': f'Invalid or expired token. Error: {e}'}), 400

user = User.query.filter_by(email=email).first()
if not user:
return jsonify({'message': 'User not found'}), 400

user.confirmed = True
db.session.commit()

return jsonify({'message': 'Account confirmed successfully!'}), 200
In this code:

The URLSafeTimedSerializer is used to generate and validate tokens.

The api_signup function creates a new user and sends a confirmation email with a token.

The confirm_account route validates the token and confirms the user's account.

Now getting this error when clicking the signup form - this part was working previously:

Failed to load resource: the server responded with a status of 500 (INTERNAL SERVER ERROR)Understand this error
brython.min.js:1 Request completed with status 500
brython.min.js:1 Response text: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) no such column: user.confirmed
[SQL: SELECT user.id AS user_id, user.email AS user_email, user.password AS user_password, user.created_at AS user_created_at, user.confirmed AS user_confirmed
FROM user
WHERE user.email = ?
LIMIT ? OFFSET ?]
[parameters: ('test3@guitarz.org', 1, 0)]
(Background on this error at: http://sqlalche.me/e/13/e3q8) // Werkzeug Debugger</title>
<link rel="stylesheet" href="?__debugger__=yes&cmd=resource&f=style.css"
type="text/css">

<link rel="shortcut icon"
href="?__debugger__=yes&cmd=resource&f=console.png">
<script src="?__debugger__=yes&cmd=resource&f=debugger.js"></script>
<script type="text/javascript">
var TRACEBACK = 2528120422800,
CONSOLE_MODE = false,
EVALEX = true,
EVALEX_TRUSTED = false,
SECRET = "QL38dzOs4VAKbpHzXPqn";
</script>
</head>
<body style="background-color: #fff">
<div class="debugger">
<h1>sqlalchemy.exc.OperationalError</h1>
<div class="detail">
<p class="errormsg">sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) no such column: user.confirmed
[SQL: SELECT user.id AS user_id, user.email AS user_email, user.password AS user_password, user.created_at AS user_created_at, user.confirmed AS user_confirmed
FROM user
WHERE user.email = ?
LIMIT ? OFFSET ?]
[parameters: ('test3@guitarz.org', 1, 0)]
(Background on this error at: http://sqlalche.me/e/13/e3q8)</p>
</div>
<h2 class="traceback">Traceback <em>(most recent call last)</em></h2>
<div class="traceback">
<h3></h3>
<ul><li><div class="frame" id="frame-2528120424208">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\base.py"</cite>,
line <em class="line">1276</em>,
in <code class="function">_execute_context</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>for fn in self.dialect.dispatch.do_execute:</pre>
<pre class="line before"><span class="ws"> </span>if fn(cursor, statement, parameters, context):</pre>
<pre class="line before"><span class="ws"> </span>evt_handled = True</pre>
<pre class="line before"><span class="ws"> </span>break</pre>
<pre class="line before"><span class="ws"> </span>if not evt_handled:</pre>
<pre class="line current"><span class="ws"> </span>self.dialect.do_execute(</pre>
<pre class="line after"><span class="ws"> </span>cursor, statement, parameters, context</pre>
<pre class="line after"><span class="ws"> </span>)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>if self._has_events or self.engine._has_events:</pre>
<pre class="line after"><span class="ws"> </span>self.dispatch.after_cursor_execute(</pre></div>
</div>

<li><div class="frame" id="frame-2528120424272">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-packages\sqlalchemy\engine\default.py"</cite>,
line <em class="line">608</em>,
in <code class="function">do_execute</code></h4>
<div class="source library"><pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>def do_executemany(self, cursor, statement, parameters, context=None):</pre>
<pre class="line before"><span class="ws"> </span>cursor.executemany(statement, parameters)</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>def do_execute(self, cursor, statement, parameters, context=None):</pre>
<pre class="line current"><span class="ws"> </span>cursor.execute(statement, parameters)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def do_execute_no_params(self, cursor, statement, context=None):</pre>
<pre class="line after"><span class="ws"> </span>cursor.execute(statement)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def is_disconnect(self, e, connection, cursor):</pre></div>
</div>

<li><div class="exc-divider">The above exception was the direct cause of the following exception:</div>
<li><div class="frame" id="frame-2528120423056">
<h4>File <cite class="filename">"C:\Users\nick\AppData\Local\Programs\Python\Python311\Lib\site-pa
brython.min.js:1 error SyntaxError: Unexpected token '<', "<!DOCTYPE "... is not valid JSON
at JSON.parse (<anonymous>)
at res (brython.min.js:1:429003)
at brython.min.js:1:244006
at on_complete13 (eval at $B.loop (brython.min.js:1:192603), <anonymous>:45:142)
at self.js.<computed> [as oncomplete] (eval at run_js (brython.min.js:1:438610), <anonymous>:197:29)
at xmlhttp.onreadystatechange (eval at run_js (brython.min.js:1:438610), <anonymous>:341:18)
brython.min.js:1 attribute parse of _self JSON {Symbol(Symbol.toStringTag): 'JSON', parse: ƒ, stringify: ƒ, rawJSON: ƒ, isRawJSON: ƒ} ƒ parse() { [native code] } ['<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Trans…his error at: http://sqlalche.me/e/13/e3q8)\n\n-->\n'] Arguments ['<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Trans…his error at: http://sqlalche.me/e/13/e3q8)\n\n-->\n', callee: ƒ, Symbol(Symbol.iterator): ƒ]
brython.min.js:1 Javascript error
SyntaxError: Unexpected token '<', "<!DOCTYPE "... is not valid JSON
at JSON.parse (<anonymous>)
at res (brython.min.js:1:429003)
at brython.min.js:1:244006
at on_complete13 (eval at $B.loop (brython.min.js:1:192603), <anonymous>:45:142)
at self.js.<computed> [as oncomplete] (eval at run_js (brython.min.js:1:438610), <anonymous>:197:29)
at xmlhttp.onreadystatechange (eval at run_js (brython.min.js:1:438610), <anonymous>:341:18)
brython.min.js:1 frames [Array(5)]

The error you are seeing is due to the fact that your database schema does not have the confirmed column that is expected in the User model. To fix this, you need to add the confirmed column to your database schema. Here are the steps to update your User model and migrate the database:

Update the User Model:

Add the confirmed column to your User model in models.py:

from flask_sqlalchemy import SQLAlchemy

db = SQLAlchemy()

class User(db.Model):
id = db.Column(db.Integer, primary_key=True)
email = db.Column(db.String(120), unique=True, nullable=False)
password = db.Column(db.String(80), nullable=False)
created_at = db.Column(db.DateTime, nullable=False, default=datetime.utcnow)
confirmed = db.Column(db.Boolean, default=False)
Generate a Migration:

Use Flask-Migrate to handle database migrations. First, install Flask-Migrate if you haven't already:

pip install flask-migrate
Then, initialize Flask-Migrate in your project:

from flask import Flask
from flask_migrate import Migrate
from app import db
from app.models import User

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///site.db'
db.init_app(app)
migrate = Migrate(app, db)

if __name__ == '__main__':
app.run(debug=True)
Next, create a migration script:

flask db init
flask db migrate -m "Add confirmed column to User model"
flask db upgrade
These commands will create the necessary migration files and apply them to your database, adding the confirmed column.

Verify and Test:

After updating your database schema, restart your Flask application and test the sign-up and account confirmation functionalities.

Here is the complete routes.py file again with the changes for clarity: