better naming for if statement

src/transformers/modeling_utils.py

@@ -542,7 +542,11 @@ class PreTrainedModel(nn.Module):
     def _do_output_past(self, outputs):
         # TODO: might be better to write a self.do_output_past method for each individual class as is done for
         # prepare_inputs_for_generation
-        if hasattr(self.config, 'output_past') and self.config.output_past and len(outputs) > 1 and not hasattr(self, 'mem_len'):
+        has_output_past = hasattr(self.config, 'output_past') and self.config.output_past
+        has_multiple_outputs = len(outputs) > 1
+        has_mem_len = hasattr(self, 'mem_len')
+
+        if has_output_past and has_multiple_outputs and not has_mem_len:
             return True
         # TODO: Add cases for (xlnet, transfo_xl) using mem_len
         return False