[issue5405] There is no way of determining which ABCs a class is registered against

[Nick Coghlan]

Nick Coghlan <ncoghlan at gmail.com> added the comment:

This topic came up again on python-ideas:
http://mail.python.org/pipermail/python-ideas/2011-May/010293.html

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stage:  -> needs patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue5405>
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