Message 336294 - Python tracker

Code looks much better now. I'm still not convinced "SharedMemory(name=None, create=False, size=0)" is the best API. How are you supposed to "create or attach" atomically? You can do that with O_EXCL but as it stands this is not togglable via the API.

Also, could you address my comment about size?
https://bugs.python.org/issue35813#msg335731