Ein Messenger-Bot, der die Webhook-Challenge erfüllt.

bot2.py

from flask import Flask                                                                                                                                          
from flask import request

app = Flask(__name__)

@app.route('/testbot', methods=["GET"])
def confirm():
    if request.args['hub.verify_token'] == "cd7czs87czds8chsiuh9eh3k3bcjhdbjhb":
        return request.args['hub.challenge']
    return 'Hello World!'

if __name__ == '__main__':
    app.debug = True
    app.run(port=8888)