code: def test_astype_non_nano_tznaive(self):
      dti = pd.date_range("2016-01-01", periods=3)
  
      res = dti.astype("M8[s]")
      assert res.dtype == "M8[s]"
  
      dta = dti._data
      res = dta.astype("M8[s]")
      assert res.dtype == "M8[s]"
      assert isinstance(res, pd.core.arrays.DatetimeArray)
  
imports: from __future__ import annotations
  from datetime import timedelta
  import operator
  import numpy
  import pytest
  from pandas._libs.tslibs import tz_compare
  from pandas.core.dtypes.dtypes import DatetimeTZDtype
  import pandas
  import pandas._testing
  from pandas.core.arrays import DatetimeArray, TimedeltaArray
label_desc: Use image node_id 2 for calling the TestDatetimeArray obj's underlying member method code with example usage: obj.test_astype_non_nano_tznaive() without return types