1def type_check(method):
 2    def checker(*expected_types):
 3        def decorator(func):
 4            def wrapper(*args, **kwargs):
 5                if method == 'in':
 6                    invalid_args = [arg for arg in args if not isinstance(arg, expected_types)]
 7                    if invalid_args:
 8                        expected_types_str = ", ".join([str(t) for t in expected_types])
 9                        print(f"Invalid input arguments, expected {expected_types_str}!")
10
11                result = func(*args, **kwargs)
12                if method == 'out' and not isinstance(result, expected_types):
13                    expected_types_str = ", ".join([str(t) for t in expected_types])
14                    print(f"Invalid output value, expected {expected_types_str}!")
15                return result
16            return wrapper
17        return decorator
18    return checker