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A modern CSS selector implementation for BeautifulSoup
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If an element has that has content we wish to skip, we have to calculate
the last descendant. Usually this is done by descending down the various
`content` members of the tags looking at their last node until we find
one that is not a tag. But we can shortcut this if the element whose
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Latest commit 24859cc Apr 20, 2019

README.md

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Soup Sieve

Overview

Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. It aims to provide selecting, matching, and filtering using modern CSS selectors. Soup Sieve currently provides selectors from the CSS level 1 specifications up through the latest CSS level 4 drafts and beyond (though some are not yet implemented).

Soup Sieve was written with the intent to replace Beautiful Soup's builtin select feature, and as of Beautiful Soup version 4.7.0, it now is 🎊. Soup Sieve can also be imported in order to use its API directly for more controlled, specialized parsing.

Soup Sieve has implemented most of the CSS selectors up through the latest CSS draft specifications, though there are a number that don't make sense in a non-browser environment. Selectors that cannot provide meaningful functionality simply do not match anything. Some of the supported selectors are:

  • .classes
  • #ids
  • [attributes=value]
  • parent child
  • parent > child
  • sibling ~ sibling
  • sibling + sibling
  • :not(element.class, element2.class)
  • :is(element.class, element2.class)
  • parent:has(> child)
  • and many more

Installation

You must have Beautiful Soup already installed:

pip install beautifulsoup4

In most cases, assuming you've installed version 4.7.0, that should be all you need to do, but if you've installed via some alternative method, and Soup Sieve is not automatically installed for your, you can install it directly:

pip install soupsieve

If you want to manually install it from source, navigate to the root of the project and run

python setup.py build
python setup.py install

Documentation

Documentation is found here: http://facelessuser.github.io/soupsieve/.

License

MIT License

Copyright (c) 2018 - 2019 Isaac Muse isaacmuse@gmail.com

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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