human
I wrote the below code

    if require:
        return cls
    else:
        def wrap(fc):
            @functools.wraps(fc)
            def wrapper(*a, **kw):
                try:
                    return fc(*a, **kw)
                except (NotImplementedError, TypeError, ValueError, IndexError, AttributeError):
                    raise pytest.skip('feature    not    implemented')
            return wrapper
        new_dict = dict(cls.__dict__)
        for (name, func) in cls.__dict__.items():
            if name.startswith('test_'):
                new_dict[name] = wrap(func)
        return type((cls.__name__ + 'NotImplemented'), cls.__bases__, new_dict)

What's a good function header?

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

def _possibly_unimplemented(cls, require=True):