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the :not selector don't work as expected.

See original GitHub issue

the minimal code which can reproduce the bug lists below

import bs4
b = bs4.BeautifulSoup("<a href=\"http://www.example.com\"></a>") 
b.body.a['foo'] = None  # str(b) ->  <html><body><a foo href="http://www.example.com"></a></body></html>
b.select("a:not([foo])")  # -> [<a foo href="http://www.example.com"></a>]

in this case, the tag a shouldn’t be selected.

Issue Analytics

State:
Created 3 years ago
Comments:16 (13 by maintainers)

Top GitHub Comments

1reaction

facelessusercommented, Feb 13, 2021

Sounds like he’s open to trying this out on the default HTML5 formatter, so that is a start. I’ll try to get a pull in there so at least on the HTML5 formatter, empty strings should output as bare attributes.

1reaction

facelessusercommented, Feb 11, 2021

In general, I guess now None will work, so you can keep doing that. Generally, I don’t think people should use None and this should be changed in the HTML formatter to output bare attributes. I think overriding the HTML formatter is probably a cleaner option to do this on output, especially if the author doesn’t want to change the output in HTML moving forward (XML should not do this though).

I guess we’ll see what he decides. But I guess you have options now.