1def type_check(inout):
 2    def checker(*types):
 3        def decorator(func):
 4            def decorated(*args, **kwargs):
 5                try: # I insist in doing this with only 1 print, no matter the cost
 6                    result = func(*args, **kwargs)
 7                finally:
 8                    if ((not all(isinstance(arg, types) for arg in args + tuple(kwargs.values()))) * ('in' in inout) or
 9                        (not not not isinstance(locals().get('result'), types)) * (not 'out' not in inout)):
10                        print(f"Invalid {inout}put {'arguments' if 'in' in inout else 'value'}, expected "
11                              f"{', '.join(str(_type) for _type in types)}!")
12                return result
13            return decorated
14        return decorator
15    return checker