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Python读取键盘输入的2种方法

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Release： 2016-06-10 15:10:32
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Python提供了两个内置函数从标准输入读入一行文本，默认的标准输入是键盘。如下：

1.raw_input
2.input

raw_input函数

raw_input() 函数从标准输入读取一个行，并返回一个字符串（去掉结尾的换行符）：

复制代码 代码如下:

str = raw_input("Enter your input: "); 
print "Received input is : ", str 

这将提示你输入任意字符串，然后在屏幕上显示相同的字符串。当我输入"Hello Python！"，它的输出如下：
复制代码 代码如下:

Enter your input: Hello Python 
Received input is :  Hello Python 

input函数

input() 函数和raw_input() 函数基本可以互换，但是input会假设你的输入是一个有效的Python表达式，并返回运算结果。这应该是两者的最大区别。

复制代码 代码如下:

str = input("Enter your input: "); 
print "Received input is : ", str 

这会产生如下的对应着输入的结果：
复制代码 代码如下:

Enter your input: [x*5 for x in range(2,10,2)] 
Recieved input is :  [10, 20, 30, 40] 
Related labels：
python
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