How to respond to POST requests in Python?

Question

Python

I tried to respond to POST requests from VKontakte servers, because I needed to confirm the server address for the callback api and create a bot. I still can't figure out how to implement it.
Task:
To receive notifications, you need to confirm the server address. A POST request containing JSON will be sent to it:
{ "type": "confirmation", "group_id": 1111111 }
The string that the server should return: ddddd

Answer 1

1. Install falcon, gunicorn, nginx
   

2. import falcon
   import json
   
   class CResourse(object):
   
     def on_post(self, req, res):
                 data = json.load(req.stream)
                 res.status = falcon.HTTP_200
                 res.body = 'ddd'
   
   app = falcon.API()
   app.add_route('/callback', CResourse())

   
   
3. In the settings of the public, specify the address domain.com/callback
   

Answer 2

Flask:

from flask import Flask

app = Flask(__name__)

@app.route('/', methods=['POST'])
def response():
    return 'ddddd'

if __name__=='__main__':
    app.run()

Answer 3

According to the HTTP standard.