1. import time
    3. def timelogging(func):
    4.     import time
    5.     def restructure(*x):
    6.         start = time.time()
    7.         func(*x)
    8.         end = time.time()
    9.         print("using time: ", (end-start))
    10.     return restructure
    12. @timelogging
    13. def start():
    14.     time.sleep(3)
    15.     print("processing")
    17. start()
    20. 结果如下：
    21. processing
    22. using time:  3.002021074295044

    关于修饰器讲解，这篇文章大力推荐：https://www.tuicool.com/articles/FBZvya