code: def has_phone_number(self):
          
          sess = self._get_web_session()
  
          try:
              resp = sess.post('https://steamcommunity.com/steamguard/phoneajax',
                              data={
                                  'op': 'has_phone',
                                  'arg': '0',
                                  'checkfortos': 0,
                                  'skipvoip': 1,
                                  'sessionid': sess.cookies.get('sessionid', domain='steamcommunity.com'),
                                  },
                              timeout=15).json()
          except:
              raise
  
          if resp['success'] == True:
              return resp['has_phone']
docs: Check whether the account has a verified phone number
  
          :return: result
          :rtype: :class:`bool` or :class:`None`
  
          .. note::
              Retruns `None` if the web requests fails for any reason