code: def test_dtypes_are_correct_after_column_slice(self):
      # GH6525
      df = DataFrame(
          index=range(5), columns=list("abc"), dtype=np.float64
      )
      tm.assert_series_equal(
          df.dtypes,
          Series({"a": np.float64, "b": np.float64, "c": np.float64}),
      )
      tm.assert_series_equal(
          df.iloc[:, 2:].dtypes, Series({"c": np.float64})
      )
      tm.assert_series_equal(
          df.dtypes,
          Series({"a": np.float64, "b": np.float64, "c": np.float64}),
      )
  
file_path: pandas/pandas/tests/frame/methods/test_dtypes.py
imports: from datetime import timedelta
  import numpy
  import pytest
  from pandas.core.dtypes.dtypes import DatetimeTZDtype
  import pandas
  from pandas import DataFrame, Series, date_range, option_context
  import pandas._testing
label_desc: Use image node_id 3 for calling the TestDataFrameDataTypes obj's underlying member method code with example usage: obj.test_dtypes_are_correct_after_column_slice() without return types