code: def getPhotos(self, tags='', per_page='', page=''):
          
          method = 'flickr.groups.pools.getPhotos'
          data = _doget(method, group_id=self.id, tags=tags,\
                        per_page=per_page, page=page)
          photos = []
          for photo in data.rsp.photos.photo:
              photos.append(_parse_photo(photo))
          return photos
docs: Get a list of photo objects for this group