python学习-42 装饰器 --- 函数闭包1

def father(name):
    print(‘hello world‘)
    def son():
        print(‘儿子说：我的爸爸是%s‘ % name)
        def grandfson():
            print(‘孙子说：我的爷爷是%s‘ % name)
        grandfson()
    son()
father(‘小明‘)

hello world
儿子说：我的爸爸是小明
孙子说：我的爷爷是小明

Process finished with exit code 0

import time

# 装饰器框架
def timmer(func):
    def wrapper():
        start_time = time.time()
        func()
        stop_time = time.time()
        print(‘运行时间为;%s‘ %(stop_time-start_time))
    return wrapper

@timmer
def test():
    time.sleep(1)
    print(‘test函数运行完毕‘)

#  test =timmer(test)  相当于 @timmer
test()

test函数运行完毕
运行时间为;1.000901460647583

Process finished with exit code 0

import time

# 装饰器框架
def timmer(func):
    def wrapper():
        start_time = time.time()
        res = func()       # 就是在运行test()
        stop_time = time.time()
        print(‘运行时间为;%s‘ %(stop_time-start_time))
        return res
    return wrapper

@timmer  # test = timmer(test)
def test():
    time.sleep(1)
    print(‘test函数运行完毕‘)
    return ‘132‘
res =test()  #
print(res)

test函数运行完毕
运行时间为;1.000777244567871
132

Process finished with exit code 0

import time

# 装饰器框架
def timmer(func):
    def wrapper(*args,**kwargs):     # *args 元组的形式，最多可传3个值。 **kwargs 字典，相当于：wrapper（*(name,age,gender),**{ }）
        start_time = time.time()
        res = func(*args,**kwargs)
        stop_time = time.time()
        print(‘运行时间为;%s‘ %(stop_time-start_time))
        return res
    return wrapper

@timmer  # test = timmer(test)
def test(name,age):
    time.sleep(1)
    print(‘test函数运行完毕，名字：%s 年龄： %s‘ % (name,age))
    return ‘132‘
ret = test(‘小王‘,20)
print(ret)

@timmer
def test1(name,age,gender):
    time.sleep(1)
    print(‘test1名字：%s,年龄%s,性别:%s‘ %(name,age,gender))
    return ‘321‘
res =test1(‘小红‘,18,‘男‘)
print(res)

test函数运行完毕，名字：小王 年龄： 20
运行时间为;1.0007729530334473
132
test1名字：小红,年龄18,性别:男
运行时间为;1.0006530284881592
321

Process finished with exit code 0