[issue23502] pprint: added support for mapping proxy

[Roundup Robot]

Roundup Robot added the comment:

New changeset 646a7e1da7f0 by Serhiy Storchaka in branch 'default':
Issue #23502: The pprint module now supports mapping proxies.
https://hg.python.org/cpython/rev/646a7e1da7f0

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nosy: +python-dev

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23502>
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