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stack.py
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stack.py
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#!/usr/bin/env python
# coding=utf-8
stack = []
def pushit():
stack.append(raw_input('Enter New string:').strip())
def popit():
if len(stack) == 0:
print 'Cannot pop from an empty stack!'
else:
print 'Removed [','stack.pop()',']'
def viewstack():
print stack
CMDs = {'u':pushit,'o':popit,'v':viewstack}
def showmenu():
pr = """
p(U)sh
p(O)p
(V)iew
(Q)uit
Enter choice:"""
while True:
while True:
try:
print 'p(U)sh'
print 'p(O)p'
print '(V)iew'
print '(Q)uit'
choice = raw_input('Enter choice:').strip()[0].lower()
except(EOFError,KeyboardInterrupt,IndexError):
choice = 'q'
print '\nYou picked:[%s]' % choice
if choice not in 'uovq':
print 'Invalid option,try again'
else:
break
if choice == 'q':
break
CMDs[choice]()
if __name__ == '__main__':
showmenu()