code: def get_members(self, show=True, proxy=None, timeout=0):
          
          title = self.params.get('title')
          pageid = self.params.get('pageid')
  
          if not title and not pageid:
              raise LookupError("needs category title or pageid")
  
          self._get('category', show, proxy, timeout)
  
          while self.data.get('continue'):
              self._get('category', show, proxy, timeout)
  
          return self
docs: GET Mediawiki:API (action=query) category members
          https://www.mediawiki.org/wiki/API:Categorymembers
  
          Required {params}: title OR pageid
          - title: <str> article title
          - pageid: <int> Wikipedia database ID
  
          Optional arguments:
          - [show]: <bool> echo page data if true
          - [proxy]: <str> use this HTTP proxy
          - [timeout]: <int> timeout in seconds (0=wait forever)
  
          Data captured:
          - members: <list> category members [{ns, pageid, title}]