可通过字典调用：{1：case1,2:case2}.get(x,lambda *args,**key:)()
# 编写一个计算器 # -*- coding=utf-8 -*-
def jia(x,y):
return x+y
def jian(x,y):
return x-y
def cheng(x,y):
return x*y
def chu(x,y):
return (x/y) # def panduan(x,i,y): # if i=="+": # jia(x,y) # elif i=='-': # jian(x,y) # elif i=='*': # cheng(x,y) # elif i=='/': # chu(x,y) # # else: # pass panduan={'+':jia,'-':jian,'*':cheng,'/':chu}
def f(x,i,y):
return (panduan.get(i)(x,y)) #(x,y,*args,**kwargs))
e=f(34,'/',2)
print (e)