posix_ipc is a Python module (written in C) that permits creation and manipulation of POSIX inter-process semaphores, shared memory and message queues on platforms supporting the POSIX Realtime Extensions a.k.a. POSIX 1003.1b-1993. This includes nearly all Unices and Windows + Cygwin 1.7.
posix_ipc is compatible with Python 2 and 3.
The latest version, contact info, sample code, etc. are available on PyPI and here: http://semanchuk.com/philip/posix_ipc/
Installation is as simple as python setup.py install. Usage, a version history, warnings, suggestions, etc. are covered in ReadMe.html.
posix_ipc is free software (free as in speech and free as in beer) released under a 3-clause BSD license. Complete licensing information is available in the LICENSE file.
You might also be interested in the similar System V IPC module at: http://semanchuk.com/philip/sysv_ipc/