AttributeError when using Python 3.9 with Flask-SocketIO and eventlet for real-time updates
I'm collaborating on a project where I've looked through the documentation and I'm still confused about I'm working with an `AttributeError` while trying to implement real-time updates using Flask-SocketIO with eventlet. My setup is pretty straightforward: I'm using Python 3.9, Flask 2.0.1, Flask-SocketIO 5.0.1, and eventlet 0.31.0. I have a simple Flask application where I'm trying to emit messages to connected clients whenever there's a new entry in the database. However, when I try to run the application, I get the following behavior: ``` AttributeError: 'NoneType' object has no attribute 'emit' ``` The relevant parts of my code look like this: ```python from flask import Flask from flask_socketio import SocketIO, emit import eventlet eventlet.monkey_patch() app = Flask(__name__) socketio = SocketIO(app) @app.route('/') def index(): return 'Welcome to the SocketIO Test!' @socketio.on('connect') def handle_connect(): print('Client connected') def new_entry(): socketio.emit('new_update', {'data': 'A new entry has been added!'}) if __name__ == '__main__': socketio.run(app, debug=True) ``` I tried checking if the `socketio` object is initialized correctly, and it seems to be. I also ensured that the `new_entry()` function is called after the server starts, but it keeps throwing this behavior. I’ve searched for similar issues but haven’t found a resolution yet. Any insights into why this might be happening and how I can fix it would be greatly appreciated! This is part of a larger API I'm building. For context: I'm using Python on Linux. Is this even possible?