python-posix-ipc 0.9.8-3build4 (arm64 binary) in ubuntu focal

 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.
 .
 This package contains the Python 2.x module.