Issues

• OSS-Fuzz build fails when setup.py imports unavailable pkg_resources

  html5lib/html5lib-python#604 · Filter by author xingyaner opened on Sep 19, 2026
  1

• DeprecationWarning: chardet.universaldetector is deprecated, import UniversalDetector from chardet or chardet.detector instead

  html5lib/html5lib-python#601 · Filter by author vivodi opened on Jul 30, 2026

• <template> element placed in <body> instead of <head> (tree builder bug)

  html5lib/html5lib-python#595 · Filter by author nghamilton opened on Mar 20, 2026

• setuptools > 81 doesn't include pkg_resources

  html5lib/html5lib-python#593 · Filter by author daeho-ro opened on Feb 21, 2026
  1

• html5lib fails to build on Python 3.14 (uses removed ast.Str node)

  html5lib/html5lib-python#588 · Filter by author sookach opened on Sep 13, 2025

• Issue while parsing valid <meta> tags

  html5lib/html5lib-python#586 · Filter by author ikus060 opened on Mar 5, 2025

• Potential Issue with moduleCache Key Handling in _utils.py

  html5lib/html5lib-python#585 · Filter by author thisisandy opened on Dec 10, 2024
  1

• Create SECURITY.md

  html5lib/html5lib-python#584 · Filter by author psmoros opened on Oct 31, 2024
  2

• Please make a new release

  html5lib/html5lib-python#577 · Filter by author mgorny opened on Jan 24, 2024
  9

• HTMLTokenizer.stream.chunkOffset not updating on string with no html elements

  html5lib/html5lib-python#571 · Filter by author ehsmeng opened on Jul 29, 2023

• Drop Support for Python 2.7

  html5lib/html5lib-python#569 · Filter by author aqeelat opened on Jul 2, 2023
  3

• Fuzzing reveals a number of parse errors

  html5lib/html5lib-python#568 · Filter by author leonardr opened on Mar 20, 2023
  2

• Found a bug in version 1.1: "AssertionError: <EMPTY MESSAGE>" caused by html5parser parsing failure.

  html5lib/html5lib-python#557 · Filter by author aT0ngMu opened on Feb 20, 2023

• 1.1: test suite uses no longer maintained pytest-expect

  html5lib/html5lib-python#538 · Filter by author kloczek opened on Dec 31, 2021
  4

• Add position information for text nodes

  html5lib/html5lib-python#533 · Filter by author corynezin opened on Apr 16, 2021

• consider making html5lib.tokenizer public

  html5lib/html5lib-python#532 · Filter by author mgrandi opened on Apr 12, 2021
  3

• HTMLParser.lastPhase and beforeRCDataPhase are unused fields

  html5lib/html5lib-python#515 · Filter by author natebosch opened on Oct 14, 2020

• supporting markdown links

  html5lib/html5lib-python#514 · Filter by author jvanasco opened on Oct 14, 2020
  1

• User documentation?

  html5lib/html5lib-python#489 · Filter by author davaya opened on May 6, 2020
  4

• Test on narrow ("UCS2") Python 2.7

  html5lib/html5lib-python#450 · Filter by author gsnedders opened on Feb 26, 2020

• Experiment with Cython

  html5lib/html5lib-python#445 · Filter by author gsnedders opened on Feb 26, 2020
  1

• Future of the sanitizer

  api-breakagesanitizer
  html5lib/html5lib-python#443 · Filter by author gsnedders opened on Feb 26, 2020
  9

• Fix prescan bug: Second and invalid http-equiv

  input-stream
  html5lib/html5lib-python#437 · Filter by author openandclose opened on Jan 16, 2020
  1

• Fix prescan bug: open end tag and alpha ('</' + alpha)

  input-stream
  html5lib/html5lib-python#436 · Filter by author openandclose opened on Jan 16, 2020

• Fix prescan bug: double open meta tag ('<<meta')

  input-stream
  html5lib/html5lib-python#435 · Filter by author openandclose opened on Jan 16, 2020