装饰器

装饰器：

import time

def timer(f):
    def inner(a):
        start_time = time.time()
        res = f(1) # 被装饰的函数
        end_time = time.time()
        print(end_time - start_time)
        return res
    return inner

@timer
def func(a): # 传参
    time.sleep(0.1)
    print("11111111",a)
    return 123456

res = func(1) # inner
print(res)