code: def get_listing(self, category=None, children=ListingHandler.NONE, count=10, offset=0, content_types=[], date_range=(), exclude=None, **kwargs):
          
          assert offset >= 0, "Offset must be a positive integer"
          assert count >= 0, "Count must be a positive integer"
  
          if not count:
              return []
  
          limit = offset + count
  
          qset = self.get_listing_queryset(category, children, content_types, date_range, exclude, **kwargs)
  
          # direct listings, we don't need to check for duplicates
          if children == ListingHandler.NONE:
              return qset[offset:limit]
  
          seen = set()
          out = []
          while len(out) < count:
              skip = 0
              # 2 i a reasonable value for padding, wouldn't you say dear Watson?
              for l in qset[offset:limit + 2]:
                  if l.publishable_id not in seen:
                      seen.add(l.publishable_id)
                      out.append(l)
                      if len(out) == count:
                          break
                  else:
                      skip += 1
  
              # no enough skipped, or not enough listings to work with, no need for another try
              if skip <= 2 or (len(out) + skip) < (count + 2):
                  break
  
              # get another page to fill in the gaps
              offset += count
              limit += count
  
          return out
docs: Get top objects for given category and potentionally also its child categories.
  
          Params:
              category - Category object to list objects for. None if any category will do
              count - number of objects to output, defaults to 10
              offset - starting with object number... 1-based
              content_types - list of ContentTypes to list, if empty, object from all models are included
              date_range - range for listing's publish_from field
              **kwargs - rest of the parameter are passed to the queryset unchanged