[issue15528] Better support for finalization with weakrefs

[Roundup Robot]

Roundup Robot added the comment:

New changeset d6ad9d7468f7 by Richard Oudkerk in branch 'default':
Issue #15528: Delay importing atexit until weakref.finalize() used.
http://hg.python.org/cpython/rev/d6ad9d7468f7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15528>
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