code: def get_access_token(self, code, method='POST', parse=True):
          
  
          data = {
              'client_id': self.CLIENT_ID,
              'client_secret': self.CLIENT_SECRET,
              'redirect_uri': self.REDIRECT_URI,
              'code': code,
              'grant_type': 'authorization_code'
          }
  
  
          if method == 'POST':
              res = self.http_post(self.ACCESS_TOKEN_URL, data, parse=parse)
          else:
              res = self.http_get(self.ACCESS_TOKEN_URL, data, parse=parse)
  
          self.parse_token_response(res)
docs: parse is True means that the api return a json string. 
          So, the result will be parsed by json library.
          Most sites will follow this rule, return a json string.
          But some sites (e.g. Tencent), Will return an non json string,
          This sites MUST set parse=False when call this method,
          And handle the result by themselves.
  
          This method Maybe raise SocialAPIError.
          Application MUST try this Exception.