POSIX IPC for Python

posix-ipc is a Python module, implemented in C, that provides access to POSIX inter-process communication primitives: semaphores, shared memory, and message queues. It enables Python applications to communicate with non-Python programs on systems supporting POSIX Realtime Extensions (POSIX 1003.1b-1993), including most Unix-like platforms and Windows via Cygwin or WSL. The current version is 1.3.2, with releases typically tied to bug fixes and modernization efforts rather than a strict cadence.