[issue42762] infinite loop resulted by "yield"

[Steve Stagg]

Steve Stagg <stestagg at gmail.com> added the comment:

I don't believe this is a bug.

You've discovered a nasty corner-case, but I think it's expected behaviour.  There is a PEP open to make this behaviour a bit nicer:  https://www.python.org/dev/peps/pep-0533/

The fact that older Python 3.5/6 versions don't get the infinite loop could be considered a bug, but this was fixed a while ago (bpo-25612), and it seems unlikely that this fix would be back-ported.

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