              yield self[i]
  
      def __getitem__(self, index):
          "Allows use of the index [] operator to get a layer at the index."
          if isinstance(index, six.string_types):
              layer = capi.get_layer_by_name(self.ptr, force_bytes(index))
              if not layer:
                  raise OGRIndexError('invalid OGR Layer name given: "%s"' % index)
          elif isinstance(index, int):
              if index < 0 or index >= self.layer_count:
 
</s> remove         if isinstance(index, six.integer_types):
 </s> add         if isinstance(index, int): </s> remove         if isinstance(index, six.string_types):
 </s> add         if isinstance(index, str): </s> remove         if not isinstance(target, six.string_types) or not isinstance(index, int):
 </s> add         if not isinstance(target, str) or not isinstance(index, int): </s> remove         if isinstance(index, six.integer_types):
 </s> add         if isinstance(index, int): </s> remove         if not isinstance(index, six.integer_types + (slice,)):
 </s> add         if not isinstance(index, (int, slice)):
        if isinstance(index, str):
              yield self[i]
  
      def __getitem__(self, index):
          "Allows use of the index [] operator to get a layer at the index."
        if isinstance(index, str):
              layer = capi.get_layer_by_name(self.ptr, force_bytes(index))
              if not layer:
                  raise OGRIndexError('invalid OGR Layer name given: "%s"' % index)
          elif isinstance(index, int):
              if index < 0 or index >= self.layer_count:
keep keep keep keep replace keep keep keep keep keep
 Refs #23919 -- Removed six.<various>_types usage

Thanks Tim Graham and Simon Charette for the reviews. 
django/contrib/gis/gdal/datasource.py