code: def set_since_id(self, twid):
          
  
          if py3k:
              if not isinstance(twid, int):
                  raise TwitterSearchException(1004)
          else:
              if not isinstance(twid, (int, long)):
                  raise TwitterSearchException(1004)
  
          if twid > 0:
              self.arguments.update({'since_id': '%s' % twid})
          else:
              raise TwitterSearchException(1004)
docs: Sets 'since_id' parameter used to return only results \
          with an ID greater than (that is, more recent than) the specified ID
  
          :param twid: A valid tweet ID in either long (Py2k) \
          or integer (Py2k + Py3k) format
          :raises: TwitterSearchException