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Python中变量交换的例子

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Release: 2016-06-16 08:42:31
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Python追求简洁,诞生不少运算赋值规则,力求从简,其中就包括两个或者多个变量交换值。
普通语言中

复制代码 代码如下:

# 声明变量
a=50
b=10
# 开始交换,先把其中一个值赋给临时变量,然后才能实现交换变量。
tmp = a
a = b
b = tmp

在Python中,实现两个变量值交换非常方便
复制代码 代码如下:

# 声明变量
a=50
b=10
# 开始交换变量
a,b = b,a

甚至可以多个变量同时交换
复制代码 代码如下:

a=50
b=10
c=20
c,b,a = a,b,c

一个运算符就搞定多个变量值互换!
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