docs: def _datetime_to_timestamp(self, v):
          """
          Py2 doesn't supports timestamp()
          """
  
          # stole from https://docs.python.org/3/library/datetime.html#datetime.datetime.timestamp
          if timezone.is_aware(v):
              return (v - timezone.datetime(1970, 1, 1, tzinfo=timezone.utc)).total_seconds()
          else:
              return (v - timezone.datetime(1970, 1, 1)).total_seconds()