eGenix PyRun 2.1.0 GA

eGenix PyRun - One file Python Runtime 2.1.0 GA

eGenix is pleased to announce our new open-source eGenix PyRun - One file Python runtime 2.1.0 for Python 2.6, 2.7 and also for Python 3.4.


eGenix PyRun is our open source, one file, no installation version of Python, making the distribution of a Python interpreter to run based scripts and applications to Unix based systems as simple as copying a single file.

eGenix PyRun's executable only needs 11MB for Python 2 and 13MB for Python 3, but still supports most Python application 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 several target machines, client installations or customers.

It makes "installing" Python on a Unix based system as simple as copying a single file.

eGenix has been using eGenix PyRun internally in the 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, or you can let our automatic install script install-pyrun take care of the installation: ./install-pyrun dir and you're done.

Please see the product page for more details:

    >>> eGenix PyRun - One file Python Runtime


This major new release of eGenix PyRun 2.1 comes with the following new features and changes:

New Features

  • Upgraded eGenix PyRun to work with and use Python 2.7.9 per default.
  • Upgraded eGenix PyRun to work with and use Python 3.4.3 for Python 3 support.
  • Added support for setting rpath on the PyRun binary to make it easy to ship external libraries together with PyRun, without having to set the LD_LIBRARY_PATH variable.
  • Added special support for egenix-pyopenssl to load its OpenSSL libs during startup.
  • PyRun allows to disable the new default HTTPS certificate verification (PEP 476) by setting the env var PYRUN_HTTPSVERIFY to 0. Default is to apply certificate verification.
  • Add support for more Python command line options: -s and -3 are ignored, -R raises an error explaining to use the PYTHONHASHSEED env var instead, -B prevents writing of byte code files.This should increase compatibility of PyRun with the standard Python command line interface.

Enhancements / Changes

  • Added patch for Python 2.7.9 and 3.4.3 to make ctypes work again after changes to those versions of Python. See for details.
  • The PyRun -v command line switch will now be passed to Python and supports setting the level using e.g. -vv for a verbose 2 level.
  • Disabled user site configurations in PyRun, since these are not needed or wanted for typical PyRun uses and cost startup time.
  • Optimized sys.path setup a bit. PyRun won't check for a Python build run and will not check lib/site-python on startup anymore.
  • PyRun for Python 3.4 is no longer compiled to always run in optimized mode. This allows using asserts in tests again.


  • Entering "license" in the interactive shell now returns the correct URL for all supported Python versions.
  • Tilde expansion now works for most arguments of install-pyrun. This wasn't working before due to a bug.

install-pyrun Quick Install Enhancements

eGenix PyRun includes a shell script called install-pyrun, which greatly simplifies installation of PyRun. It works much like the virtualenv shell script used for creating new virtual environments (except that there's nothing virtual about PyRun environments).

With the script, an eGenix PyRun installation is as simple as running:

./install-pyrun targetdir

This will automatically detect the platform, download and install the right pyrun version into targetdir.

We have updated this script since the last release:

  • Updated install-pyrun to default to eGenix PyRun 2.1.0 and its feature set.
  • Added -r/--requirements option which allows automatically installing a set of required packages using a requirements file, so you can easily set up a complete Python environment using a single 
    ./install-pyrun -r requirements.txt targetdir
  • Updated install-pyrun to install pyrun 2.1.0, setuptools 15.2 and pip 1.5.6 per default.
For a complete list of changes, please see the eGenix PyRun Changelog.


Please visit the eGenix PyRun product page for downloads, instructions on installation and documentation of the product.

More Information

For more information on eGenix PyRun, licensing and download instructions, please write to

Enjoy !

Marc-Andre Lemburg,

Published: 2015-05-11