code: def test_dti_hour_tzaware(self, prefix):
      strdates = ["1/1/2012", "3/1/2012", "4/1/2012"]
      rng = DatetimeIndex(strdates, tz=prefix + "US/Eastern")
      assert (rng.hour == 0).all()
  
      # a more unusual time zone, GH#1946
      dr = date_range(
          "2011-10-02 00:00",
          freq="h",
          periods=10,
          tz=prefix + "America/Atikokan",
      )
  
      expected = Index(np.arange(10, dtype=np.int32))
      tm.assert_index_equal(dr.hour, expected)
  
imports: import calendar
  from datetime import date, datetime, time
  import locale
  import unicodedata
  import numpy
  import pytest
  from pandas._libs.tslibs import timezones
  from pandas import DatetimeIndex, Index, NaT, Timestamp, date_range, offsets
  import pandas._testing
  from pandas.core.arrays import DatetimeArray
label_desc: Use image node_id 9 for calling the TestDatetimeIndexOps obj's underlying member method code with example usage: obj.test_dti_hour_tzaware(prefix) without return types