一、定义
lambda arg1,arg2... : returnValue
二、示例
#!/usr/bin/python
def f(x,y):
return x*y
print f(2,3)
#6
g = lambda x,y:x*y
print g(2,3)
#6
三、switch的一种实现方案
#!/usr/bin/python
from __future__ import division
#a=int(raw_input('please input num1:'))
#b=int(raw_input("please input num2:"))
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 operator(x,o,y):
if o == '+':
print jia(x,y)
elif o == '-':
print jian(x,y)
elif o == '*':
print cheng(x,y)
elif o == '/':
print chu(x,y)
else:
pass
operatord = {'+':jia,'-':jian,'*':cheng,'/':chu}
def switchoperator(x,o,y):
print operatord.get(o)(x,y)
operator(2,'+', 4)
operator(2,'-', 4)
operator(2,'*', 4)
operator(2,'/', 4)
switchoperator(2,'+', 4)
switchoperator(2,'-', 4)
switchoperator(2,'*', 4)
switchoperator(2,'/', 4)
