[issue29922] error message when __aexit__ is not async

[R. David Murray]

R. David Murray added the comment:

This is a specific example of the general problem reported in issue 25538.

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nosy: +r.david.murray
resolution:  -> duplicate
stage:  -> resolved
status: open -> closed
superseder:  -> Traceback from __exit__ method is misleading

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29922>
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