code: def test_ymd_h(dt, date_fmt, tzoffset):
      _isoparse_date_and_time(dt, date_fmt, "%H", tzoffset)
  
imports: from __future__ import unicode_literals
  from datetime import datetime, timedelta, date, time
  import itertools
  from dateutil import tz
  from dateutil.tz import UTC
  from dateutil.parser import isoparser, isoparse
  import pytest
  import six
label_desc: Use image node_id 6 for calling a global function with example usage: test_ymd_h(dt, date_fmt, tzoffset) without return types