How can I implement asynchronous tasks in Flask?

How can I implement asynchronous tasks in Flask?

You can use libraries like Celery or Flask-SocketIO to handle asynchronous tasks in Flask. Would you like a code example?

Yes, please provide a code example using Celery.

Sure! First, install Celery with pip install celery. Then, set up a simple task like this:

from celery import Celery

app = Celery('tasks', broker='redis://localhost:6379/0')

@app.task
def add(x, y):
    return x + y

You can call this task asynchronously using add.delay(4, 6).

What if I want to use Flask-SocketIO instead?

With Flask-SocketIO, you can emit events to the client asynchronously. First, install it with pip install flask-socketio. Then, set it up like this:

from flask import Flask
from flask_socketio import SocketIO

app = Flask(__name__)
socketio = SocketIO(app)

@socketio.on('message')
def handle_message(data):
    print('Received message: ' + data)
    socketio.send('Message received!')

You can run the app with socketio.run(app).