Python实现switch功能

#!/usr/bin/env python
# Filename: switch.py
# Author: zhangliang - z_liang90@126.com
# Last modified: 2014-02-26 10:53
# Description:
from __future__ import division
def arithMetic(x,oprator,y):
result = {
'+':x+y,
'-':x-y,
'*':x*y,
'/':x/y
}
return result.get(oprator)
x = input('x:')
y = input('y:')
oprator = raw_input('oprator:')
retval = arithMetic(x, oprator, y)
print '%d %s %d = %d' % (x, oprator, y, retval)

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