[issue29019] dict.fromkeys overallocates when given a sparse dict

[Roundup Robot]

Roundup Robot added the comment:

New changeset 46e329ef13ae by INADA Naoki in branch '2.7':
Issue #29019: Fix dict.fromkeys(x) overallocates when x is sparce dict.
https://hg.python.org/cpython/rev/46e329ef13ae

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nosy: +python-dev

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29019>
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