Python subTest decorator

subtest.py

def subTests(params):
    """
    @subTests(...)
    def test_foo(self):
        ...

    ->

    def test_foo(self):
        for param in ...:
            with self.subTest(param):
                ...
    """
    def decorator(method):
        def wrapper(self, *args, **kwargs):
            for param in params:
                with self.subTest(param):
                    method(*((self, param) + args), **kwargs)
        return wrapper
    return decorator