import time

def logger():

    """追加写"""

    time_format='%Y-%m-%d %X'#年-月-日 小时分钟秒

    time_current=time.strftime(time_format)

    with open('uuu.txt','a+') as f:

        f.write('%s end action\n'%time_current)

def fun1():

    """描述函数1功能"""

    print('in the fun1')

    logger()

def fun2():

    """描述函数2功能"""

    print('in the fun2')

    logger()

fun1()

fun2()

"""

使用函数的三大优点:

1.代码重用

2.保持一致性

3.可扩展性

"""