contains non-ASCII characters doesn't have an encoding declaration at the top.

我在pycharm打开别人写好的Django模块时，页面出现如下图划横线的情况：

 

问题详情：

Non-ASCII character 你 in file, but no encoding declared less... (Ctrl+F1) 
Inspection info: This inspection detects file contains non-ASCII characters and doesn't have an encoding declaration at the top.

问题解释：

自动生成的带头部注释的文件日期是汉字的年月日，需要规定编码为UTF-8才可以

解决办法：

在页面第一行加：

#coding=UTF-8