code: def _call(self, resource_url, params=None):
          
          
          url = "%s%s" % (self._endpoint(), resource_url)
          if params:
              url += "?%s&%s" % (params, self._auth())
          else:
              url += "?%s" % self._auth()
          return requests.get(url)
docs: Calls the Marvel API endpoint
  
          :param resource_url: url slug of the resource
          :type resource_url: str
          :param params: query params to add to endpoint
          :type params: str
          
          :returns:  response -- Requests response