def make_simple_preprocessor(obj):
    """Factory that makes a function that accepts (step, context) and returns the given obj as *args and no kwargs.

    :param obj: Any object.
    :return:    A function that accepts (step, context) paramteres and returns a tuple (*args, **kwargs) in the
                following form:
                (
                    (obj,),
                    {}
                )
    """
    return lambda step, context: ((obj,), {})