Skip to content
LZ4 bindings for python
C Python C++
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Failed to load latest commit information.
src
tests
.gitignore
.travis.yml Added support for Python3. Aug 1, 2013
MANIFEST.in
README.rst
setup.py

README.rst

python-lz4

https://secure.travis-ci.org/steeve/python-lz4.png?branch=master

Overview

This package provides bindings for the lz4 compression library by Yann Collet.

Code specific to this project is covered by the BSD 3-Clause License

Install

The package is hosted on PyPI:

$ pip install lz4
$ easy_install lz4

Usage

The library is pretty simple to use:

>>> import lz4
>>> compressed_data = lz4.dumps(data)
>>> data == lz4.loads(compressed_data)
True
>>>

Methods and Constants

The bindings provides some aliases too:

>>> import lz4
>>> lz4.LZ4_compress == lz4.compress == lz4.dumps
True
>>> lz4.LZ4_uncompress == lz4.uncompress == z4.decompress == lz4.loads
True
>>> lz4.VERSION == lz4.__version__  # e.g. "0.7.0"
True
>>>

Is it fast ?

Yes. Here are the results on my 2011 Macbook Pro i7 with lz4.c as input data:

$ python tests/bench.py
Data Size:
  Input: 24779
  LZ4: 10152 (0.41)
  Snappy: 9902 (0.40)
  LZ4 / Snappy: 1.025247
Benchmark: 200000 calls
  LZ4 Compression: 9.737272s
  Snappy Compression: 18.012336s
  LZ4 Decompression: 2.686854s
  Snappy Decompression : 5.146867s

Important note

Because LZ4 doesn't define a container format, the python bindings will insert the original data size as an integer at the start of the compressed payload, like most bindings do anyway (Java...)

https://cruel-carlota.pagodabox.com/d37459f4fce98f2983589a1c1c23a4e4
Something went wrong with that request. Please try again.