code: def level_matches(self, level, consumer_level):
          
          if isinstance(level, slice):
              start, stop = level.start, level.stop
              if start is not None and start > consumer_level:
                  return False
              if stop is not None and stop <= consumer_level:
                  return False
              return True
          else:
              return level >= consumer_level
docs: >>> l = Logger([])
          >>> l.level_matches(3, 4)
          False
          >>> l.level_matches(3, 2)
          True
          >>> l.level_matches(slice(None, 3), 3)
          False
          >>> l.level_matches(slice(None, 3), 2)
          True
          >>> l.level_matches(slice(1, 3), 1)
          True
          >>> l.level_matches(slice(2, 3), 1)
          False