报错：
File "./001hellopython.py", line 1
SyntaxError: Non-ASCII character '\xe4' in file ./001hellopython.py on line 1, but no encoding declared;
see http://www.python.org/peps/pep-0263.html for details
原因：
Python默认是以ASCII作为编码方式的，需要在文件开头设置一下编码
# -*- coding: UTF-8 -*-
或者
#coding=utf-8