[issue4922] set.add and set.discard are not conformant to collections.MutableSet interface

[Benjamin Peterson]

Benjamin Peterson <benjamin at python.org> added the comment:

Ported to py3k in r68630 and 3.0 in r68631.

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nosy: +benjamin.peterson

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue4922>
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