code: def test_timedelta_new_npnat():
      # GH#48898
      nat = np.timedelta64("NaT", "h")
      assert Timedelta(nat) is NaT
  
imports: from datetime import timedelta
  from itertools import product
  import numpy
  import pytest
  from pandas._libs.tslibs import OutOfBoundsTimedelta
  from pandas._libs.tslibs.dtypes import NpyDatetimeUnit
  from pandas import Index, NaT, Timedelta, TimedeltaIndex, offsets, to_timedelta
  import pandas._testing
label_desc: Use image node_id 21 for calling a global function with example usage: test_timedelta_new_npnat() without return types