How do I implement sessions in Flask?

How do I implement sessions in Flask?

To implement sessions in Flask, you can use the built-in session object. First, ensure you have Flask installed.

What do I need to set up before using sessions?

You need to set a secret key for your Flask app to securely sign the session cookie. Use app.secret_key = 'your_secret_key'.

Can you show me a simple example?

Sure! Here's a basic example:

from flask import Flask, session

app = Flask(__name__)
app.secret_key = 'your_secret_key'

@app.route('/set_session')
def set_session():
    session['username'] = 'user1'
    return 'Session set!'

@app.route('/get_session')
def get_session():
    return f'Username: {session.get("username")}'