SyntaxError: Non-ASCII character '\xf0' in file train.py on line 1, but no encoding declared;

问题遇到的现象和发生背景

File "train.py", line 1
SyntaxError: Non-ASCII character '\xf0' in file train.py on line 1, but no encoding declared; see http://www.python.org/peps/pep-0263.html for details

问题相关代码,请勿粘贴截图

先按照网上的博客修改,在文件前面增加#coding:utf-8还是报错

运行结果及报错内容
我的解答思路和尝试过的方法
我想要达到的结果

这样试试呢 #-- coding:UTF-8 --

https://blog.csdn.net/qq_38156743/article/details/124091508