pyzstd 0.13.0

Python bindings for Zstandard (zstd) compression algorithm, the interface is similar to Python's bz2/lzma module.

Introduction

pyzstd module provides classes and functions for compressing and decompressing data, using Facebook’s Zstandard (or zstd as short name) algorithm.

The interface is similar to Python’s bz2/lzma module.

Includes zstd v1.4.5 source code.

Links

Documentation: https://pyzstd.readthedocs.io/en/latest/

GitHub: https://github.com/animalize/pyzstd

Release note

0.13.0 (Nov 7, 2020)

1. ZstdDecompressor class: now it has the same API and behavior as BZ2Decompressor / LZMADecompressor classes in Python standard library, it stops after a frame is decompressed.

2. Add an EndlessZstdDecompressor class, it accepts multiple concatenated frames. It is renamed from previous ZstdDecompressor class, but .at_frame_edge is True when both input and output streams are at a frame edge.

3. Rename zstd_open() function to open(), consistent with Python standard library.

4. decompress() function:

   • ~9% faster when: there is one frame, and the decompressed size was recorded in frame header.

   • raises ZstdError when input or output data is not at a frame edge. Previously, it only raise for output data is not at a frame edge.

0.12.5 (Oct 12, 2020)

No longer use Argument Clinic, now supports Python 3.5+.

0.12.4 (Oct 7, 2020)

It seems the API is stable.

0.2.4 (Sep 2, 2020)

The first version upload to PyPI.

Includes zstd v1.4.5 source code.