docs: def strptime(self, value, format):
          """
          By default, parse datetime with TZ.
          If TZ is False, convert datetime to local time and disable TZ
          """
  
          value = force_str(value)
          if format == ISO_8601:
              try:
                  parsed = parse_datetime(value)
                  if not settings.USE_TZ:
                          fr_tz = pytz.timezone(settings.TIME_ZONE)
                          parsed = parsed.astimezone(fr_tz).replace(tzinfo=None)
              except:
                  raise APIException(
                      "date parsing error: since parameter use the date format ISO 8601 (ex: 2014-11-18T15:56:58Z)")
  
              if parsed is None:
                  raise APIException(
                      "since parameter use the date format ISO 8601 (ex: 2014-11-18T15:56:58Z)")
              return parsed
          return super(IsoDateTimeField, self).strptime(value, format)