23_flask_session_test.py

import sys
from flask import Flask, session, url_for, redirect

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


@app.route('/')
def set():
    session.clear()
    session['works'] = True
    return redirect(url_for('get'))


@app.route('/get')
def get():
    works = session.get('works', False)
    return str(works)


app.run(sys.argv[1], use_reloader=False)