1def type_check(label):
 2    def check_for_valid_type(*valid_types):
 3        def decorator(func):
 4            def wrapper(*args, **kwargs):
 5                arg_list = args + tuple(kwargs.values())
 6                if label == "in":
 7                    for arg in arg_list:
 8                        if not isinstance(arg, valid_types):
 9                            print(f"Invalid input arguments, expected {', '.join(str(v) for v in valid_types)}!")
10                            break
11
12                result = func(*args, **kwargs)
13                if label == "out":
14                    if not isinstance(result, valid_types):
15                        print(f"Invalid output value, expected {', '.join(str(v) for v in valid_types)}!")
16                return result
17            return wrapper
18        return decorator
19    return check_for_valid_type