[issue17800] Add gc.needs_finalizing() to check if an object needs finalising

[Nick Coghlan]

Nick Coghlan added the comment:

Antoine came up with a scheme (see issue 17807) that should eliminate the tp_del implementation from generator objects by moving the cleanup code to the frame deallocation.

This will restore Guido's original assumption that types implemented in C won't need to provide tp_del, so this proposal becomes obsolete.

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dependencies:  -Generator memory leak
resolution:  -> out of date
superseder:  -> Generator cleanup without tp_del

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17800>
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