[issue27107] mailbox.__all__ list is incomplete

[Roundup Robot]

Roundup Robot added the comment:

New changeset 4705b7597c86 by Martin Panter in branch 'default':
Issue #27107: Add exception classes to mailbox.__all__, by Jacek Kołodziej
https://hg.python.org/cpython/rev/4705b7597c86

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nosy: +python-dev

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27107>
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