eGenix PyRun™ is our open source, one file, no installation version of Python, making the distribution of a Python interpreter to run Python based scripts and applications to Unix based systems simple and efficient.
eGenix PyRun's executable only needs 11MB for Python 2 and 13MB for Python 3, but still supports most Python applications and scripts - and it can be compressed to just 3-4MB using upx, if needed.
Compared to a regular Python installation of typically 100MB on disk, eGenix PyRun is ideal for applications and scripts that need to be distributed to containers, VMs, clusters, client installations, customers or end-users.
It makes "installing" Python on a Unix based system as simple as copying a single file.
eGenix has been using eGenix PyRun as run-time for the Linux version of mxODBC Connect Server product since 2008 with great success and decided to make it available as a stand-alone open-source product.
We provide both the source archive to build your own eGenix PyRun, as well as pre-compiled binaries for Linux, FreeBSD and Mac OS X, as 32- and 64-bit versions. The binaries can be downloaded manually below, or you can let our automatic install script install-pyrun take care of the installation:
./install-pyrun dir and you're done.
If you'd like to learn more about eGenix PyRun, please see the talk we gave at the EuroPython 2012 conference in Florence. The talk video and slides are available in our presentations section:
eGenix PyRun Talk at EuroPython 2012
install-pyrun -r requirements.txtrun.
eGenix PyRun needs these third party tools to be available on the target machines:
Future versions of PyRun will add more flexibility to the build process to make the requirements more customizable.
If you want to compile PyRun yourself, you will need the development packages of the above tools, a C compiler and a GNU make compatible make installed.
Please note that the binary versions of these libraries also need to
be available on the PyRun installation target systems. Most modern
Unix systems have the above libraries installed per default.
eGenix PyRun is covered by the eGenix.com Public License Agreement 1.1.0 which is an Open Source license based on the CNRI Python license. Since PyRun also pulls in Python, the respective Python license also applies to the resulting pyrun binary. See the eGenix PyRun license page for more details.
In simple words, you are free to use the software without paying fees or royalties as long as you give proper attribution and keep the license documents together with the software. Please see the license document for details and consult a lawyer if you have legal questions.
The following documentation is available for eGenix PyRun:
eGenix PyRun User Manual and Reference Guide - HTML and PDF
The manual includes a usage guide, an explanation of the build procedure and discusses a few common use cases.
The PDF file is also available as part of the installation and can be found in the
Please note that the documentation
for this release is not yet as complete and comprehensive as it
should be. We're working on it.
For details on how to use Python via eGenix PyRun, please refer to the official Python documentation.
You can use any of the available Python books to learn to use Python with PyRun.
We provide pre-compiled binaries of PyRun for a number of platforms, and also make the sources available, so you can build your own variants.
If you want your Unix system to automatically download and install
PyRun into a directory, you can use a script that we've written for this
purpose. It's called install-pyrun and will detect the correct version for your system, install it and then proceed with the installation of setuptools and pip. Try it:
You'll always get the latest version of PyRun that way. See the virtualenv replacement section below for more details.
eGenix PyRun currently does not support Windows. We are working on a port, but this is not a high priority at the moment. Patches are welcome !
Solaris binaries can be made available on demand.
AIX binaries can be made available on demand.
If you need binaries for platforms not mentioned here, please contact email@example.com for details. It is very likely that we can find a way to help you.
Python 2 can be built as narrow Unicode version (UCS2) or wide
Unicode version (UCS4). For Python 3, there is only a single UCS4 version.
If you want to interface to system installed Python libraries, you need to download the right variant for your platform. Most Unixes ship with wide Python builds these days (including RedHat and SuSE). In order to make sure, please run the following command which will tell you what kind of Python installation you have:
python -c "import sys;print(sys.maxunicode<66000)and'UCS2'or'UCS4'"
If you get errors such as "unresolved symbol PyUnicodeUCS2_AsEncodedString" when trying to load an extension from eGenix PyRun, you have likely installed a binary for different Unicode version.
For full details on how to install, setup and configure eGenix PyRun, please see the eGenix PyRun User Manual. It is available as PDF for offline reading and HTML for online reading:
eGenix PyRun User Manual and Reference Guide - HTML and PDFWhat follows is a short summary:
eGenix PyRun currently does not support Windows platforms.
Simply download a suitable binary distribution for the version of Python and platform you need and extract it to a base directory where you'd like PyRun to live. Then use the eGenix PyRun executable like you'd use a regular Python interpreter, e.g.
./bin/pyrun myscript.pyYou can also put pyrun into the shebang of the script, e.g.
# Hello World Demo
print ("Hello World!")
Please note that the binary distributions contain more than just the PyRun executable. They also come with a few extra standard library extensions which are normally not part of PyRun and the include files needed to compile Python extensions for use with PyRun.
If you are just looking for the plain single-file PyRun executable, only extract the file
bin/pyrunX.X (with X.X being the
underlying Python version, e.g. 2.7) from the binary distributions.
To further simplify installation of eGenix PyRun, we've created a
bash script which you can use to easily install PyRun in a similar way
to how you'd use the virtualenv script. The script is called install-pyrun and available from our download server.
Usage is simple:
The script will download the right PyRun binary distribution for your platform, install it in the targetdir and then download and install setuptools and pip.
The script also offers a few options to adjust various parameters, install PyRun from a local directory, select a specific version, skip installation of setuptools and pip, etc. The script will output a list of options when run with -h:
It uses curl to download the packages, so you need to have curl installed on your platform.
If you want to install PyRun together with pip and all your project dependencies, use the -r requirements.txt option:
./install-pyrun -r requirements.txt targetdir
If you want to ship your product with PyRun and need external libraries for PyRun to link against, simply place them into the same directory as the PyRun executable. PyRun comes with an rpath setting to first look in the PyRun binary's directory for share libraries to simplify this often needed setup.
For more details, please see the documentation.
If you want to install other libraries or packages for use in eGenix PyRun, you need to pay a little more attention to where you copy the executable. eGenix PyRun assumes the following directory layout relative to the executable (with X.X being the underlying Python version, e.g. 2.7):
bin/pyrunX.X (Python 2) or
include/pythonX.Xm (Python 3)
lib/pythonX.X directory is used as location of the Python
libaries and automatically put on
sys.path in case it is available. Optional packages installed through distutils or setuptools will go into the corresponding
lib/pythonX.X directory may also contain Python standard library extension modules in the
sub-directory which are not integrated into the eGenix PyRun
executable. The prebuilt binary distributions come with a set of
include/ directory is only needed in case you want to
compile Python C extensions. It is available as
part of the prebuilt binary distributions we make available.
In order to build your own version, simply download the above source archive, untar/unzip it to a temporary directory and follow these steps:
This will download the Python source distribution and start a build
of eGenix PyRun. The result will be installed to the directory
/usr/local/ using the directory layout as described above.
If you'd like to build a binary distribution archive, use the following commands instead:
You can then pick up the distribution archive from the
If you would rather install to a different directory, you can add the make parameter
PREFIX=/path/to/pyrun/, This will cause make to install eGenix PyRun in
If you want to build against a specific Python version, you can specify the version using the make parameter
PYTHONFULLVERSION=2.7.12. Please have a look at the
PyRun/Makefile for more ways of customizing the setup.
For future versions of eGenix PyRun, we plan to make the setup
customizable via a top-level setup.py file so you can use Python to
trigger the build, customize the included standard lib extension modules
eGenix offers these support options:
Professional level support for this product as well as all other eGenix products and Python itself is available directly from the developers at eGenix.com.
eGenix.com offers professional consulting services for all questions and tasks around this product, including customized modifications, help with integration and on-site problem solving. Please contact firstname.lastname@example.org for details.
In order for our users to keep in touch and be able to help themselves, we have created the egenix-users user mailing list.
eGenix PyRun has been in use in production as part of our mxODBC Connect Server client-server database product for many years.
We are pleased to make it available to a wide public.
Please see the change log for details regarding changes to the package between releases.
Older versions of eGenix PyRun, which are still available: