lz4

What's Changed

• build_dist workflow - (re)add arm support for Linux and Windows by @K0lb3 in #300

New Contributors

• @K0lb3 made their first contribution in #300

Full Changelog: v4.4.3...v4.4.4

What's Changed

• Disable aarch64 builds due to compiler failure by @jonathanunderwood in #298

Full Changelog: v4.4.2...v4.4.3

What's Changed

• Add .readthedocs.yml by @jonathanunderwood in https://github.com/python-lz4/python-lz4/pull/268
• Build wheels for Python 3.12 by @evansd in https://github.com/python-lz4/python-lz4/pull/275

New Contributors

• @evansd made their first contribution in https://github.com/python-lz4/python-lz4/pull/275

Full Changelog: https://github.com/python-lz4/python-lz4/compare/v4.3.2...v4.3.3

What's Changed

• Fixups by @jonathanunderwood in #266

Full Changelog: v4.3.1...v4.3.2

What's Changed

• Update some more github action versions by @jonathanunderwood in #265

Full Changelog: v4.3.0...v4.3.1

What's Changed

• Add wheel building for Linux Aarch64 and MacOS Arm64 by @jonathanunderwood in #264

Full Changelog: v4.2.0...v4.3.0

What's Changed

• Update bundled libraries to lz4 1.9.4 by @jonathanunderwood in https://github.com/python-lz4/python-lz4/pull/262

Full Changelog: https://github.com/python-lz4/python-lz4/compare/v4.1.0...v4.2.0

What's Changed

• Build wheels for python 3.11 by @dbaxa in https://github.com/python-lz4/python-lz4/pull/257
• Fix the use of package envs in tox by @jonathanunderwood in https://github.com/python-lz4/python-lz4/pull/263

New Contributors

• @dbaxa made their first contribution in https://github.com/python-lz4/python-lz4/pull/257

Full Changelog: https://github.com/python-lz4/python-lz4/compare/v4.0.2...v4.1.0

This release fixes #247 (via #255) - thanks to @jmg-duarte for the fix.

What's Changed

• Add flush method to LZ4FrameFile by @pedrovhb in https://github.com/python-lz4/python-lz4/pull/245

New Contributors

• @pedrovhb made their first contribution in https://github.com/python-lz4/python-lz4/pull/245

Full Changelog: https://github.com/python-lz4/python-lz4/compare/v4.0.0...v4.0.1

• This release relegates the stream bindings to experimental status and disables them in all wheel builds. This was necessary as the test suite was causing build failures on multiple architectures. These bindings are currently in an unmaintained state.
• This release re-enables Windows wheel builds

This release adds support for publishing wheels to PyPi for Python 3.9. Wheel building is currently broken for Python 3.9 on Arm/Aarch64.

This release also drops building of wheels for Python 3.5.

This required some significant changes to the Travis and Appveyor configurations including:

• Moving to Visual Studio 2019 (14.2) on AppVeyor
• Building against the XCode 12.2 image on Travis

• Travis now publishes wheels for Arm thanks to @ossdev07
• The stream tests now execute in much less time thanks to @tpwrules

This release contains various fixups thanks to @godlygeek:

• Correct how pkgconfig is handled in setup.py to account for multiple build flags (#203 #204)
• Improve how CHAR_BIT is handled (#202 #201)

This release adds block size record support to the stream bindings thanks to @tSed.

In addition this release contains fixups to the tests to reduce execution time (@tsed), and a few small fixes.

This release removes py3c from the codebase and strips out unused Python 2 support code. No functional changes are included with this release.

This release fixes an issue that prevented the OSX wheels from being published to PyPi, and contains no functional changes.

This release:

• Drops support for Python 2 (although some dead code remains for future removal)
• Adds streams support thanks to the hard work of @tSed
• Fixes a performance bug with the frame bindings - thanks to @bjonen for the careful report and reproducer
• Adds Python 3.8 support

This release updates the bundled LZ4 library to version 1.9.1.

The 2.2.x releases will be the final release that support Python 2.7. In the near future we'll begin work on the 3.0.x release which will only support Python >= 3.5, and will require LZ4 > 1.9.0.

• Cleanup some code in _block.c to suppress some compiler warnings
• Add some more detail to the install docs
• Move to cibuildwheel 0.11.1

This release contains no functional changes, it simply fixes the broken wheel deployment for OSX.

This release fixes issue #172 which causes failures in decompression for the Frame bindings on Windows.

This release contains no user facing changes, but does include a built wheel built for Python 2.7 on OSX.

This release follows some re-working of the CI/CD infrastructure, and integration with the codecov service.

This release contains no functional changes other than changes to the Appveyor configuration for publishing wheels.

This release contains no functional changes other than changes to the Travis configuration for publishing wheels.

This release brings:

• A simplification of the tox.ini file (thanks to @jdufresne)
• More robust checking for pkgconfig availability (#158, thanks to @raymondEhlers)
• Integration of cibuildwheel into travis builds so as to build and publish binary wheels for Linux and OSX (fixes #99 , #144 , #153)
• Only require pytest-runner if pytest/test is being called (fixes #161)
• Blacklists version 3.3.0 of pytest which has a bug that can cause the tests to fail.

This release:

• Improves the speed of importing the module by avoiding the use of pkg_resources (#154) - thanks to @cgohike)
• Fixes some flake8 warnings
• Resolves a small issue with the test suite when detecting memory usage increases

This release updates the bundled LZ4 libraries to version 1.8.3. This fixes a bug with the block format compression/decompression. This fixes #150.

Thanks to @ajholyoake.

This release changes the handling of errors for block decompression when uncompressed_size > 0. In this case, we no longer check that the uncompressed data has exactly the size specified by uncompressed_size: this argument is now used as an upper bound.

In addition, we introduce a new exception: LZ4BlockError which is raised whenever the LZ4 library fails.

These two changes together allow "guessing" of the uncompressed data size: simply set uncompressed_size to a number and try decompress, and catch LZ4BlockError. If LZ4BlockError is raised, increase uncompressed_size and try again.

See the documentation for more details and examples.

• Fix setup.py to gracefully handle old system installed versions of LZ4 libraries (thanks to @nikitos3000 )
• Fix a possible segfault in the frame decompress functions (thanks to @diorcety)

This release fixes #134 - tests failed when run under python setup.py test, but passed when running under tox.

Changes in this release:

• It's now possible to specify a compession dictionary for block compression. Thanks to @mkuyper for this work.
• The bundled LZ4 libraries have been updated to 1.8.2
• A compatibility fix for 2.x memoryview objects has been added. Thanks to @XeCycle for this work.
• Various flake8 cleanups and test additions.

This release removes the deprecated functions which were marked as remove in 1.0, but nonetheless remained:

• lz4.lz4version()
• LZ4FrameCompressor.finalize()

As a side effect, we noo longer have a dependency on the deprecation package.

This release fixes a bug which stopped lz4.frame.open from functioning for any mode with the t (text) specifiers. Issue #122. Thanks to @nick-hahner for the report.

Only documentation updates since 0.23.2. This marks the release of a stable frame binding API.

This release:

• Fixes an error in the deprecated LZ4Compressor.finalize() method
• Improves documentation
• Has all example code in documentation verified via doctest

This release:

• Deprecates lz4.frame.LZ4FrameCompressor.finalize()
• Improves docstrings and documentation

• Update to py3c version 1.0 header files
• Fixing of resource clearing in context managers
• Move attribute definitions to __init__.py
• Enhances documentation

This version includes some docstring updates.

A glitch prevented Appveyor from pushing 0.21.1 to PyPi. This release is functionally identical to 0.21.1.

This release:

• Improves test coverage to the level planned for version 1.0
• Improves documentation and docstrings
• Adds a LZ4FrameCompressor.flush() method
• Fixes a couple of bugs with LZ4FrameDecompressor behaviour with respect to handling data after the end of a frame marker
• Adds a LZ4FrameDecompressor.reset() method

With this release we're entering feature freeze for 1.0 release. Documentation updates and bug fixes are the only expected changes.

This release bumps the bundled LZ4 library files to version 1.8.1.2.

This release fixes a memory leak in lz4.frame.decompress_chunk() which also impacted the file handling functionality (Issue #106). Thanks to @alex2108 for the report and reproducer.

This release adds compressed file handling capability to the lz4.frame sub-package.

This necessitated some changes to the API of lz4.frame.decompress_chunk, ad some smaller changes to the LZ4FrameCompressor and LZ4FrameDecompressor classes. Please see updated documentation for further details.

This release fixes a memory leak that was introduced in lz4.frame.decompress in 0.18.1. This leak resulted from an incorrect ref count on the returned result which prevented it from ever being released and garbage collected. Thanks to @bt-wil for the report and reproducer (issue #96).

This is a minor bugfix release which fixes two small bugs which would result in source references not being released on error conditions in lz4.frame.compress.

This release changes the strategy for allocating memory to not use undocumented and potentially fragile Python internals (Py_SIZE). This may have a small performance impact, but brings stronger guarantees for future stability.

This release fixes a pathological case where compressing and decompressing a zero length bytes object could result in the resulting bytes object causing False to be returned from val == 'b'.

This release contains various fixes to docstrings and improvements to documentation only.