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PyPI · #2617 most downloaded on PyPI
Drop-in replacement for zlib and gzip modules using zlib-ng
Last release 1 years ago
10 Sep 2025
Release timing varies
gaps range from 4 weeks to 12 months
Nearly every release is documented
notes for 10 of 10 stable releases
Nothing withdrawn
no release was ever pulled
4 years old
10 releases · first in 2023
One column per quarter.
The library has been running without issues as a dependency in quite a few projects and is now stable enough for the first major version.
The library has been running without issues as a dependency in quite a few
projects and is now stable enough for the first major version.
Fix a bug where flushing in threaded mode did not write the data to the output file.
Wheels are now build for MacOS arm64 architectures.
gzip_ng.compress and gzip_ng.decompressFix a bug where files larger than 4GB could not be decompressed.
Fix a reference counting error that happened on module initialization and triggered an error in the CPython debug build.
Fix a bug where streams that were passed to gzip_ng_threaded.open where closed.
Add a gzip_ng_threaded module that contains the gzip_ng_threaded.open function. This allows using multithreaded compression as well as escaping the GI
gzip_ng_threaded module that contains the gzip_ng_threaded.opengzip_ng._GzipReader has been rewritten in C. As a result thegzip_ng._GzipReader in C is now used in gzip_ng.decompress. The_GzipReader also can read from objects that support the buffer protocol.Source distributions on Linux now default to building with configure and make as it is faster and has less dependencies than CMake.
zlib-ng 2.1.2 release notes <https://github.com/zlib-ng/zlib-ng/releases/tag/2.1.2>_ as well as2.1.3 <https://github.com/zlib-ng/zlib-ng/releases/tag/2.1.3>,2.1.4 <https://github.com/zlib-ng/zlib-ng/releases/tag/2.1.4> and2.1.5 <https://github.com/zlib-ng/zlib-ng/releases/tag/2.1.5>_.Update embedded zlib-ng version to 2.0.7
The first release for python-zlib-ng.
The first release for python-zlib-ng.
python -m zlib_ng.gzip_ng.Your coding agent can read these notes before it upgrades. Set up the MCP server →