human
I wrote the below code

    def side_effect(*args, **kwargs):
        '\n                                A    side    effect    for    tests    which    returns    a    value    based\n                                on    a    given    argument    otherwise    return    actual    function.\n                                '
        if (args[0] == value):
            return return_value
        else:
            return DEFAULT
    return side_effect

What's a good function header?
 ... Here's a good function header?
assistant
#Here's a good function header.

def side_effect_for_get_value(value, return_value):