Comments (4)
tacaswell
commented on June 3, 2024
1
I tested with the development branch of py311 (Python 3.11.1+ (heads/3.11:c915f00eca, Jan 4 2023, 10:49:59) [GCC 12.2.0]) and can not reproduce this so I very strongly suspect that this is a CPython bug.
I do not have the time to bisect this to be sure, but I suspect that python/cpython#100098 is the upstream bug and it is not worth changing to data classes to work around this.
I think for now the best bet is to drop to 3.11.0 and wait for 3.11.2.
I'm going to close this because it looks very much like an upstream bug that has already been fixed. Even if we added "does not work with 3.11.1" to future releases, it would not help because the solver would just pick an old broken version (that we released before 3.11.1 and obviously could not predict the future).
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danielballan
commented on June 3, 2024
Thanks!
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tacaswell
commented on June 3, 2024
What version of caproto are you using and can you try from the main branch? Very oddly I can reproduce this with py311 but not with the CPython main branch.
The values on the CAStatus enum should be a named-tuple, but something is down-casting them to normal tuples in the iteration process. Without digging into it my guess is that this is actually a regression in CPython that has already been fixed (that said, betting on it being a bug in CPython is a bad bet).
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klauer
commented on June 3, 2024
Confirmed on CI that 3.11.2 is working with caproto (#811)
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