code: def datetime_iso_format(date):
      
      return "{0:0>4}-{1:0>2}-{2:0>2}T{3:0>2}:{4:0>2}:{5:0>2}Z".format(
          date.year, date.month, date.day, date.hour,
          date.minute, date.second)
docs: Return an ISO-8601 representation of a datetime object.