operation/models.py

@@ -17,7 +17,7 @@ def upload_path(instance, old_filename):

                     return 'file/{year}{month}/{timestamp}{extension}'.format(
              

                         year=today.year,
              

                         month=today.month,
              

                -        timestamp=time.time(),
              

                +        timestamp=int(time.time()),
              

                         extension=extension
              

                     )