This is an issue with Python 3.9; if you read the trace, you can see it right in the path. HTMLParser has changes in 3.9 that break mdv. If you're on Ubuntu, chances are the system installation of ...

HTMLParser tried its best to parse anything that looked like HTML. But after creation of HTML5, its specification defines the parsing rules for HTML documents, whether they are syntactically correct ...

Now many applications need to analyze various detail contents of web pages. How to extract web information quickly and effectively becomes very important. Web information is primarily expressed by ...