[issue32528] Change base class for futures.CancelledError

[Yury Selivanov]

Yury Selivanov <yselivanov at gmail.com> added the comment:

Done. 🤞 we don't regret this.

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resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue32528>
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