Comments (4)
Original comment by @hpk42
If a global is None, it means that the interpreter is shutting down. Part of this procedure sets all module globals to None (to break reference cycles). I guess we can try to do pack = struct.unpack
on the class level and then access it via self.pack
or so. When @RonnyPfannschmidt refactored this code he probably didn't guard against this behaviour because there are no explicit tests that the core input/output works when setting globals to None.
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Original comment by @alfredodeza
It seems the more I try to fix this the more globals I find that need to be changed.
After making Message
a class attribute I got len
used in to_io
to have issues there as well.
Would it be OK to catch TypeError
and not complain in that final try/except
block?
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Original comment by @hpk42
it would prevent the shutdown sequence to run but i guess we could go with it for the time being. In this case the "if Message is not None" is a better check than catching type error i think. And make a comment that it's because of interpreter shutdown that it can be None.
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Original comment by @hpk42
add changelog for an earlier change:
fix issue22 -- during interpreter shutdown don't throw
an exception when we can't send a termination sequence
anymore as we are about to die anyway.
→ <<cset 45113a98f6be>>
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