python装饰器学习例子分析

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转载最新推荐文章于 2026-04-22 15:41:48 发布 211 阅读 AI 写同款· GEO 优化 ›

Python学习——Python装饰器执行逻辑、执行顺序、调用流程原理分析士大夫阅读详情

import time

def timeit(func):
    def wrapper():
        start = time.clock()
        func()
        end = time.clock()
        print('used:', end - start)
        print(func.__name__)
    return wrapper

@timeit
def foo():
    print('in foo()')


#foo=timeit(foo)
#print(type(foo))
foo()
print(foo.__name__)

输出为：

in foo()
used: 3.116935176822943e-05
foo
wrapper

def debug(func):
    def wrapper():
        print ("[DEBUG]: enter {}()".format(func.__name__))
        return func()
    return wrapper

@debug
def say_hello():
    print ("hello!")

#say_hello = debug(say_hello)  # 添加功能并保持原函数名不变

say_hello()


import time
 
def foo():
    print 'in foo()'
 
def timeit(func):
    start = time.clock()
    func()
    end =time.clock()
    print 'used:', end - start
 
timeit(foo)

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