[issue33087] No reliable clean shutdown method

[Brett Cannon]

Change by Brett Cannon <brett at python.org>:


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type: behavior -> enhancement
versions: +Python 3.8 -Python 2.7, Python 3.4, Python 3.5, Python 3.6, Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33087>
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