python

# 记录日志函数

# 不带参数
def log(func):
    def wrapper():
        print("Logging execution")
        func()
        print("Finished logging")
    return wrapper

def log_of_param(param):
    def decorator(func):
        def wrapper():
            print(f"Logging with param: {param}")
            func()
            print(f"Finished logging with param: {param}")
        return wrapper
    return decorator

@log  # 等价于 now = log(now)
@log_of_parameter('execute') # 等价于 now = log_of_parameter('execute')(now)，第一步log_of_parameter('execute')返回decorator函数，第二步返回装饰后的函数
def now():
	print('2024.2.4')

now()
# 执行结果
# Logging execution
# Logging with param: execute
# 2024.2.4
# Finished logging with param: execute
# Finished logging