                 Python-LZO -- Python bindings for LZO

              Copyright (c) 1996-2002 Markus F.X.J. Oberhumer
                          <markus@oberhumer.com>
                 http://www.oberhumer.com/opensource/lzo/
              Copyright (c) 2011-2016 Joshua D. Boyd
                          <jdboyd@jdboyd.net>
                 https://github.com/jd-boyd/python-lzo

What is LZO ?

LZO is a portable lossless data compression library written in ANSI C. It offers pretty fast compression and very fast decompression. Decompression requires no memory.

In addition there are slower compression levels achieving a quite competitive compression ratio while still decompressing at this very high speed.

What is Python-LZO ?

Python-LZO provides Python bindings for LZO, i.e. you can access the LZO library from your Python scripts thereby compressing ordinary Python strings.

Installation

Ubuntu/Debian Linux

You need the following dependencies installed:

zlib1g-dev
liblzo2-dev
python-pip or python3-pip

Then, just pip install python-lzo.

CentOS/Red Hat Enterprise Linux

You need the following dependencies installed:

yum install epel-release
yum install python-pip
yum install lzo-devel
yum install lzo-minilzo

Then, just pip install python-lzo.

macOS

You need XCode installed, or something else that provides suitable C compiler. Then just:

pip install python-lzo

Windows

There is an issue filed to provide a pre-compiled wheel to greatly simplify this.

Until then, here we go:

Download http://www.oberhumer.com/opensource/lzo/download/lzo-2.09.tar.gz
extract that file to c:\src\ (should produce c:\src\lzo-2.09 )
Install a visual studio compatible with your python build. If you are using python 2.7, MS has a package just for you at: https://www.microsoft.com/en-us/download/details.aspx?id=44266 Current automated tests are done with Visual Studio 2013, but newer should work as well.
python.exe setup.py install

Where's the documentation ?

Python-LZO comes with built-in documentation which is accessible using lzo.__doc__ and lzo.func__doc__. See "Chapter 3: Data Model" in the Python Reference Manual for more information.

Additionally you should read the docs and study the example programs that ship with the LZO library.

Python 2 support statement

As of 1.15, Python 2.x is unsupported. To continue using Python 2.6 or Python 2.7, please stick with version 1.14.

Notes

The Windows version is tested.

It is not currently continuously tested on OSX, but that is coming.

Releasing

Update version in setup.py and the MODULE_VERSION define in lzomodule.c.
Update NEWS.
Tag with new release.
wheels
PyPi

Copyright

The Python-LZO algorithms implementated post 2011 are Copyright (C) 2011, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, & 2023 Joshua D. Boyd jdboyd@jdboyd.net and others as denoted in the git history.

The LZO and Python-LZO algorithms and implementations are distributed under the terms of the GNU General Public License (GPL). See the file COPYING.