code: def test_transpose_frame(self):
      df = DataFrame(
          np.random.default_rng(2).standard_normal((10, 4)),
          columns=Index(list("ABCD"), dtype=object),
          index=date_range("2000-01-01", periods=10, freq="B"),
      )
      tm.assert_frame_equal(df.transpose().transpose(), df)
  
imports: from copy import copy, deepcopy
  import numpy
  import pytest
  from pandas.core.dtypes.common import is_scalar
  from pandas import DataFrame, Index, Series, date_range
  import pandas._testing
label_desc: Use image node_id 9 for calling the TestNDFrame obj's underlying member method code with example usage: obj.test_transpose_frame() without return types