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How to use test_to_yaml_registered_dataframe_check method in pandera

Best Python code snippet using pandera_python

test_io.py

Source:test_io.py

...482    """Test that unregistered checks raise a warning when formatting checks."""483    with pytest.warns(UserWarning):484        io._format_checks({"my_check": None})485@mock.patch("pandera.Check.REGISTERED_CUSTOM_CHECKS", new_callable=dict)486def test_to_yaml_registered_dataframe_check(_):487    """488    Tests that writing DataFrameSchema with a registered dataframe check works.489    """490    ncols_gt_called = False491    @pa_ext.register_check_method(statistics=["column_count"])492    def ncols_gt(pandas_obj: pd.DataFrame, column_count: int) -> bool:493        """test registered dataframe check"""494        # pylint: disable=unused-variable495        nonlocal ncols_gt_called496        ncols_gt_called = True497        assert isinstance(column_count, int), "column_count must be integral"498        assert isinstance(499            pandas_obj, pd.DataFrame500        ), "ncols_gt should only be applied to DataFrame"...

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