今天开始学习这本书,由于有薄弱的基础,看起来并不会很吃力,先记录下简单的一个习题
练习3-3
# -*- coding:utf-8 -*-
def do_twice(f):
f()
f()
def do_four(f):
do_twice(f)
do_twice(f)
def jiajian():
print('+ - - - -',end=' ')
def gang():
print('/ ',end=' ')
def yihang():
do_twice(jiajian)
print('+')
def erhang():
do_twice(gang)
print('/')
def zhouqi():
yihang()
do_four(erhang)
def zongti():
do_twice(zhouqi)
yihang()
zongti()
最终的输出为: