Python中文乱码问题

1：源代码

#!/usr/bin/env python

name = raw_input('请输入您的姓名:')

print 'Hello,', name

运行时出错：

y@y:~/my_note/my_python$ python 5.py
File "5.py", line 3
SyntaxError: Non-ASCII character '\xe8' in file 5.py on line 3, but no encoding declared; see http://www.python.org/peps/pep-0263.html for details

2：修改后

#!/usr/bin/env python
#coding=utf-8

name = raw_input('请输入您的姓名:')

print 'Hello,', name

运行结果：

y@y:~/my_note/my_python$ python 5.py
请输入您的姓名:张三
Hello, 张三

也可以这么写:

#-*-coding:utf-8-*-

#!/usr/bin/env python
#-*-coding:utf-8-*-

name = raw_input('请输入您的姓名:')

print 'Hello,', name