pyhton2 中解决读写文件中含中英文内容报错问题

异常语句：'ascii' codec can't encode characters in position 1-9: ordinal not in range(128)
解决办法：

# -*- coding: utf-8 -*-
import codecs
content =  u'你好 你是最好的！helloworld'
f =codecs.open(path,mode="w",encoding="utf-8")
f.write(content)
f.close()