A PTA exported exercise paper format helper which clean the results.
不想复习 FDS 的产物，当你拿到一张别人给你的导出试卷却发现全是选项不好做题怎么办？
遮住选项！但是太不方便了，虽然我尝试过用 Snipaste 来贴白纸，但是还是容易剧透。
恰好 PTA 的导出是 html 文件，于是就有了这个。
我比较懒，只删掉了影响做题的部分，有好心人可以做一下信息脱敏，像我这种做题拉跨怪都不好意思分享自己的低分卷呜呜呜。
如你所见，requirements.txt 里只有一个 bs4。
然后使用：
python format.py <.../xxx.html>就会在目标文件同级产生一个 .../xxx_clean.html，刚好我删掉了 disabled 属性，就可以互动式做题了（答案还是自己对x）。
其实把答案折叠起来更方便，但是我不会也暂时懒得学（？）。
本工具本意为个人使用，绝无鼓励传播 PTA 付费产品的想法！因此任何通过本工具传播 PTA 上下载的试卷的个人行为与我无关！与我无关！！
存在一些卷子含有中文字符，在直接使用时会出现编码错误，我在两个open函数添加了encoding="utf-8"修复了这个bug
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