[issue19077] More robust TemporaryDirectory cleanup

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Here is a patch which implements Richard's suggestion. test_del_on_shutdown and test_warnings_on_cleanup are failed, but perhaps they are wrong.

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Added file: http://bugs.python.org/file33379/tempfile_tempdir_cleanup_weakref_finalize.patch

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