3.5.0rc3

.. bpo: 24305 .. date: 9302 .. nonce: QeF4A8 .. release date: 2015-09-07 .. section: Core and Builtins

Prevent import subsystem stack frames from being counted by the warnings.warn(stacklevel=) parameter.

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.. bpo: 24912 .. date: 9301 .. nonce: ubSi5J .. section: Core and Builtins

Prevent class assignment to immutable built-in objects.

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.. bpo: 24975 .. date: 9300 .. nonce: 2gLdfN .. section: Core and Builtins

Fix AST compilation for :pep:448 syntax.

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.. bpo: 24917 .. date: 9299 .. nonce: xaQocz .. section: Library

time_strftime() buffer over-read.

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.. bpo: 24748 .. date: 9298 .. nonce: 83NuO8 .. section: Library

To resolve a compatibility problem found with py2exe and pywin32, imp.load_dynamic() once again ignores previously loaded modules to support Python modules replacing themselves with extension modules. Patch by Petr Viktorin.

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.. bpo: 24635 .. date: 9297 .. nonce: EiJPPf .. section: Library

Fixed a bug in typing.py where isinstance([], typing.Iterable) would return True once, then False on subsequent calls.

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.. bpo: 24989 .. date: 9296 .. nonce: 9BJLiy .. section: Library

Fixed buffer overread in BytesIO.readline() if a position is set beyond size. Based on patch by John Leitch.

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.. bpo: 24913 .. date: 9295 .. nonce: p2ZAJ4 .. section: Library

Fix overrun error in deque.index(). Found by John Leitch and Bryce Darling.