STINNER Victor <vstin...@python.org> added the comment:

> -1 about the PR solution to suppress ProcessLookupError in case the process 
> is gone.

Did someone propose a pull request to fix this issue by ignoring 
ProcessLookupError?

> In psutil I solved the “pid reused problem” by using process creation time to 
> identify a process uniquely (on start). 

Well, that requires to write platform specific code.

I would prefer to only use platform specific code when the platform provides 
something like pidfd: I understand that Linux, FreeBSD, OpenBSD, NetBSD, and 
Illumos are concerned. I mean reuse an exisiting solution, rather than writing 
our own "workaround" (solution?).

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<https://bugs.python.org/issue38630>
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