test_shared_memory_cleaned_after_process_termination() uses time as a weak synchronization primitive:


        # killing abruptly processes holding reference to a shared memory
        # segment should not leak the given memory segment.
        p.terminate()
        p.wait()
        time.sleep(1.0)  # wait for the OS to collect the segment

        with self.assertRaises(FileNotFoundError):
            smm = shared_memory.SharedMemory(name, create=False)

Would it be possible to use a more reliable synchronization? Such test usually fail randomly.
https://pythondev.readthedocs.io/unstable_tests.html