What is the right syntax for calling async functions?

[master0v]

Would you like assistance or advice?
assistance

Issue description
in the example below, trying to call an async function from within "def message(self, message):"

Steps to reproduce
insert "await inside the "def message(self, message):" where is a function defined as async

Traceback or other info

• fbmessenger version: latest
• python version: 3.7.3
• Facebook Messenger API version: 11.0

[master0v]

I followed the advice given here: https://stackoverflow.com/questions/31866796/making-an-asynchronous-task-in-flask

Basically I had to change the Flask harness like so:

@app.route('/webhook', methods=['GET', 'POST'])
**async** def webhook():
  if request.method == 'GET':
    logger.debug(f"checking that {request.args.get('hub.verify_token')} == {configuration.cfg['FB_VERIFY_TOKEN']}")
    if (request.args.get('hub.verify_token') == configuration.cfg['FB_VERIFY_TOKEN']):
      return request.args.get('hub.challenge')
    raise ValueError('FB_VERIFY_TOKEN does not match.')
  elif request.method == 'POST':
    **await** messenger.handle(request.get_json(force=True))
  return ''

as well as install pip3 install asgiref

is this correct?