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How to use test_no_dtype_dataframe method in pandera

Best Python code snippet using pandera_python

test_schemas.py

Source:test_schemas.py

...467            match=r"^Error while coercing .+ to type u{0,1}int[0-9]{1,2}: "468            r"Could not coerce .+ data_container into type",469        ):470            schema.validate(df)471def test_no_dtype_dataframe():472    """Test how nullability is handled in DataFrameSchemas where no type is473    specified."""474    schema = DataFrameSchema({"col": Column(nullable=False)})475    validated_df = schema.validate(pd.DataFrame({"col": [-123.1, -76.3, 1.0]}))476    assert isinstance(validated_df, pd.DataFrame)477    schema = DataFrameSchema({"col": Column(nullable=True)})478    validated_df = schema.validate(pd.DataFrame({"col": [-123.1, None, 1.0]}))479    assert isinstance(validated_df, pd.DataFrame)480    with pytest.raises(errors.SchemaError):481        schema = DataFrameSchema({"col": Column(nullable=False)})482        schema.validate(pd.DataFrame({"col": [-123.1, None, 1.0]}))483def test_no_dtype_series() -> None:484    """Test how nullability is handled in SeriesSchemas where no type is485    specified."""...

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