GeezerVison is showing github.com — article/corepython2ndsourcecode/ch06/stack.py at master · pythonpeixun/article

Expand file tree

stack.py

Copy path

More file actions

Latest commit

History

66 lines (51 loc) · 1.25 KB

stack.py

Copy path

File metadata and controls

66 lines (51 loc) · 1.25 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

#!/usr/bin/env python

# coding:utf-8

'''

欢迎参加黄哥python远程视频培训,

帮你完成从不会写代码到会写代码解决问题的过渡。

https://github.com/pythonpeixun/article/blob/master/index.md

咨询qq:1465376564

黄哥Python培训黄哥改写

Python 3

P145页代码

'''

stack = []

def pushit():

stack.append(input('Enter new string: '))

def popit():

if len(stack) == 0:

print('Cannot pop from an empty stack!')

else:

print('Removed [', stack.pop(), ']')

def viewstack():

print(str(stack))

def showmenu():

prompt = """

p(U)sh

p(O)p

(V)iew

(Q)uit

Enter choice: """

done = 0

while not done:

chosen = 0

while not chosen:

try:

choice = input(prompt)[0]

except (IndexError, EOFError, KeyboardInterrupt):

choice = 'q'

print('\nYou picked: [%s]' % choice)

if choice not in 'uovq':

print('invalid option, try again')

else:

chosen = 1

if choice == 'q':

done = 1

if choice == 'u':

pushit()

if choice == 'o':

popit()

if choice == 'v':

viewstack()

if __name__ == '__main__':

showmenu()