[issue25786] contextlib.ExitStack introduces a cycle in exception __context__

[Irit Katriel]

Change by Irit Katriel <iritkatriel at yahoo.com>:


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resolution: fixed -> duplicate
stage:  -> resolved
status: pending -> closed
superseder:  -> Hang with contextlib.ExitStack and subprocess.Popen (regression)

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue25786>
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