#检查指定源中是否存在包版本号比10.1源低

使用方法：
第一步：先填写source_list,一行填写一条
填写方式如下：
deb http://archive.kylinos.cn/kylin/KYLIN-ALL 10.1-kv main restricted universe multiverse
deb http://archive.kylinos.cn/kylin/KYLIN-ALL 10.1 main restricted universe multiverse
deb http://archive.kylinos.cn/kylin/KYLIN-ALL 10.1-wayland-2203-updates main universe restricted multiverse
deb http://archive.kylinos.cn/kylin/KYLIN-ALL 10.1-wayland-2303-updates main universe restricted multiverse


第二步：执行python3 main.py
