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Metadata-Version: 2.1
Name: pyzstd
Version: 0.15.3
Summary: Python bindings to Zstandard (zstd) compression library, the API is similar to Python's bz2/lzma/zlib modules.
Home-page: https://github.com/animalize/pyzstd
Author: Ma Lin
Author-email: malincns@163.com
License: The 3-Clause BSD License
Keywords: zstandard zstd compression decompression compress decompress
Classifier: Development Status :: 4 - Beta
Classifier: Intended Audience :: Developers
Classifier: Topic :: System :: Archiving :: Compression
Classifier: License :: OSI Approved :: BSD License
Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: Python :: Implementation :: PyPy
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Requires-Python: >=3.5
Description-Content-Type: text/x-rst
License-File: LICENSE
Introduction
------------
Pyzstd module provides classes and functions for compressing and decompressing data, using Facebook's `Zstandard <http://www.zstd.net>`_ (or zstd as short name) algorithm.
The API is similar to Python's bz2/lzma/zlib modules.
Includes zstd v1.5.2 source code, can also dynamically link to zstd library provided by system, and has a CFFI implementation that can work with PyPy, see `this note <https://pyzstd.readthedocs.io/en/latest/#build-pyzstd>`_ for details.
Links
-----------
Documentation: https://pyzstd.readthedocs.io/en/latest
GitHub: https://github.com/animalize/pyzstd
Release note
------------
**0.15.3 (Aug 3, 2022)**
Fix ``ZstdError`` object can't be pickled.
**0.15.2 (Jan 22, 2022)**
Update bundled zstd source code from v1.5.1 to `v1.5.2 <https://github.com/facebook/zstd/releases/tag/v1.5.2>`_.
**0.15.1 (Dec 25, 2021)**
#. Update bundled zstd source code from v1.5.0 to `v1.5.1 <https://github.com/facebook/zstd/releases/tag/v1.5.1>`_.
#. Fix ``ZstdFile.write()`` / ``train_dict()`` / ``finalize_dict()`` may use wrong length for some buffer protocol objects, see `this issue <https://github.com/animalize/pyzstd/issues/4>`_.
#. Two behavior changes:
* Setting ``CParameter.nbWorkers`` to ``1`` now means "1-thread multi-threaded mode", rather than "single-threaded mode".
* If the underlying zstd library doesn't support multi-threaded compression, no longer automatically fallback to "single-threaded mode", now raise a ``ZstdError`` exception.
#. Add a module level variable `zstd_support_multithread <https://pyzstd.readthedocs.io/en/latest/#zstd_support_multithread>`_.
#. Add a setup.py option ``--avx2``, see `this note <https://pyzstd.readthedocs.io/en/latest/#build-pyzstd>`_.
**0.15.0 (May 18, 2021)**
#. Update bundled zstd source code from v1.4.9 to `v1.5.0 <https://github.com/facebook/zstd/releases/tag/v1.5.0>`_.
#. Some improvements, no API changes.
**0.14.4 (Mar 24, 2021)**
#. Add a CFFI implementation that can work with PyPy.
#. Allow dynamically link to zstd library.
**0.14.3 (Mar 4, 2021)**
Update bundled zstd source code from v1.4.8 to `v1.4.9 <https://github.com/facebook/zstd/releases/tag/v1.4.9>`_.
**0.14.2 (Feb 24, 2021)**
#. Add two convenient functions: `compress_stream() <https://pyzstd.readthedocs.io/en/latest/#compress_stream>`_, `decompress_stream() <https://pyzstd.readthedocs.io/en/latest/#decompress_stream>`_.
#. Some improvements.
**0.14.1 (Dec 19, 2020)**
#. Update bundled zstd source code from v1.4.5 to `v1.4.8 <https://github.com/facebook/zstd/releases/tag/v1.4.8>`_.
* v1.4.6 is a non-public release for Linux kernel.
* v1.4.8 is a hotfix for `v1.4.7 <https://github.com/facebook/zstd/releases/tag/v1.4.7>`_.
#. Some improvements, no API changes.
**0.13.0 (Nov 7, 2020)**
#. ``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.
#. Add an ``EndlessZstdDecompressor`` class, it accepts multiple concatenated frames. It is renamed from previous ``ZstdDecompressor`` class, but ``.at_frame_edge`` is ``True`` when both the input and output streams are at a frame edge.
#. Rename ``zstd_open()`` function to ``open()``, consistent with Python standard library.
#. ``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 <https://docs.python.org/3/howto/clinic.html>`_, now supports Python 3.5+, previously 3.7+.
**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 <https://github.com/facebook/zstd/releases/tag/v1.4.5>`_ source code.