Method apply

pandas/tests/apply/conftest.py:28–54

(data, func, args, kwargs, decorator, axis)

        return data.map(func, na_action="ignore" if skip_na else None, **kwargs_to_pass)

    def apply(data, func, args, kwargs, decorator, axis):
        if isinstance(data, Series):
            return data.apply(func, convert_dtype=True, args=args, by_row=False)
        elif isinstance(data, DataFrame):
            return data.apply(
                func,
                axis=axis,
                raw=False,
                result_type=None,
                args=args,
                by_row="compat",
                **kwargs,
            )
        else:
            assert isinstance(data, np.ndarray)

            def wrap_function(func):
                # https://github.com/numpy/numpy/issues/8352
                def wrapper(*args, **kwargs):
                    result = func(*args, **kwargs)
                    if isinstance(result, str):
                        result = np.array(result, dtype=object)
                    return result

                return wrapper

            return np.apply_along_axis(wrap_function(func), axis, data, *args, **kwargs)


class MockEngineDecorator: