decorator-裝飾器

decorator

# 無參僅需2層函式
def log_print(func):
	def wrapper(*args, **kwargs):
		print("before " + func.__name__)
		result = func(*args, **kwargs)
		print("after " + func.__name__)
		return result
	return wrapper

# 有參3層函式
def log_print2(params: bool = False):
	def decorator(func):
		def wrapper(*args, **kwargs):
			print(f"bool:{params}")
			print("before " + func.__name__)
			result = func(*args, **kwargs)
			print("after " + func.__name__)
			return result
		return wrapper
	return decorator
def test(a, b):
	print(f"入參項為:{a},{b}")
	return a + b


@log_print2(params=True)
def test2(a, b):
	print(f"入參項為:{a},{b}")
	return a + b

test(1, 2)

test2(1, 2)`