python & dict & switch

python & dict & switch

python 中是没用switch语句的，这应该是体现python大道至简的思想，python中一般多用字典来代替switch来实现。

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Wed Jan 30 22:12:43 2019

@author: xgqfrms-mbp
"""

#coding: utf-8
from __future__ import division

def jia(x,y):
    print(x+y);

def jian(x,y):
    print(x-y);

def cheng(x,y):
    print(x*y);

def chu(x,y):
    print(x/y);

operator = {'+':jia,'-':jian,'*':cheng,'/':chu};

def f(x,o,y):
    operator.get(o)(x,y);

f(3,'+',2);