python SyntaxError: Non-ASCII character '\xe6' in file but no encoding declared 解决

写python的时候出现如下错误：

SyntaxError: Non-ASCII character '\xe6' in file D:\naviserver\src\TestPython\Test.py on line 4, but no encoding declared; see http://www.python.org/peps/pep-0263.html for details

错误原因原来是默认python的.py文件不支持中文需要在文件头部加入

# -*- coding: UTF-8 -*-

加入上面一段文字就可以在python中添加中文内容或注释