[issue31864] datetime violates Postel's law

[Geoff Kuenning]

Change by Geoff Kuenning <geoff at cs.hmc.edu>:


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components: +Library (Lib)
type:  -> behavior
versions: +Python 2.7, Python 3.4, Python 3.5, Python 3.6, Python 3.7, Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue31864>
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