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Changelog

0.22.1

  • Added support for Python 3.13.
  • Dropped support for Python 3.8.

0.22.0

  • The GIL is released when using a bytes haystack with BytesAhoCorasick. Thanks to Isaac Garzón.

0.21.0

  • Added support for searching bytes, bytearray, memoryview, and similar objects using the BytesAhoCorasick class. Thanks to Isaac Garzón.

0.20.0

  • Added support for Python 3.12.

0.19.0

  • If an empty string is passed in as a pattern, AhoCorasick() will now raise a ValueError. Previously using empty patterns could result in garbage results or exceptions when matching.
  • Upgraded to aho-corasick v1.1.1.

0.18.0

  • Upgraded to aho-corasick v1.1.0, which can run faster on ARM machines like newer Macs.

0.17.0

  • Upgraded to aho-corasick v1.0.5, fixing performance regression in construction of AhoCorasick objects.

0.16.0

  • Upgraded to aho-corasick v1.0.4, leading to massive reduction in memory usage during construction.

0.15.0

  • AhoCorasick() can now accept an iterable of strings, instead of just a list of strings. This means you can, for example, lazily create patterns in a generator to save memory; the underlying implementation will still use the bulk of the memory, however.
  • The default implementation (which used to be DFA) will now be chosen heuristically based on the inputs; this may result in a slow-down in some cases. To get the old behavior, you can do AhoCorasick(..., implementation=Implementation.DFA).
  • Upgraded to aho-corasick v1.0.3, which will result in lower memory usage in some cases.
  • Dropped support for Python 3.7, which is now end of life.
  • Dropped support for macOS 10.5, which is now end of life.

0.14.0

  • Upgraded to aho-corasick v1.0.
  • Exposed the choice between DFA, non-contiguous NFA, and contiguous NFA implementations.
  • ahocorasick.MatchKind enum replaces the module-level MATCHKIND_* constants. (The old MATCHKIND_* constants are deprecated, but will continue to work so long as you were using constants rather than strings.)
  • Add type signatures.

0.13.0

  • Use less memory when constructing an instance.
  • Added an option (store_patterns) to control whether patterns are cached on the object. The new behavior is to use a heuristic by default to decide whether to cache the strings.

0.12.3

  • Added support for Python 3.11.

0.12.2

  • Added wheels for ARM Macs, and Linux on ARM.
  • Started distributing a source tarball for platforms lacking wheels.

0.12.1

  • Dropped support for Python 3.6 (it is no longer maintained); users of Python 3.6 can still use older releases.
  • Improved performance a little.

0.12.0

  • Added support for Python 3.10.

0.11.0

  • Faster performance, thanks to PyO3 v0.14.

0.10.0

  • Fixed bug where find_matches_as_indexes() didn't give correct offsets for non-ASCII strings (#12). Thanks to @necrosovereign for reporting and @BurntSushi for suggesting fix.