3.5.0b3

.. bpo: 24467 .. date: 9236 .. nonce: BAJ80- .. release date: 2015-07-05 .. section: Core and Builtins

Fixed possible buffer over-read in bytearray. The bytearray object now always allocates place for trailing null byte and it's buffer now is always null-terminated.

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.. bpo: 0 .. date: 9235 .. nonce: 944IUY .. section: Core and Builtins

Upgrade to Unicode 8.0.0.

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.. bpo: 24345 .. date: 9234 .. nonce: fVcTaB .. section: Core and Builtins

Add Py_tp_finalize slot for the stable ABI.

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.. bpo: 24400 .. date: 9233 .. nonce: 2mNeD8 .. section: Core and Builtins

Introduce a distinct type for :pep:492 coroutines; add types.CoroutineType, inspect.getcoroutinestate, inspect.getcoroutinelocals; coroutines no longer use CO_GENERATOR flag; sys.set_coroutine_wrapper works only for 'async def' coroutines; inspect.iscoroutine no longer uses collections.abc.Coroutine, it's intended to test for pure 'async def' coroutines only; add new opcode: GET_YIELD_FROM_ITER; fix generators wrapper used in types.coroutine to be instance of collections.abc.Generator; collections.abc.Awaitable and collections.abc.Coroutine can no longer be used to detect generator-based coroutines--use inspect.isawaitable instead.

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.. bpo: 24450 .. date: 9232 .. nonce: lF0S5c .. section: Core and Builtins

Add gi_yieldfrom to generators and cr_await to coroutines. Contributed by Benno Leslie and Yury Selivanov.

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.. bpo: 19235 .. date: 9231 .. nonce: 0kW4n5 .. section: Core and Builtins

Add new RecursionError exception. Patch by Georg Brandl.

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.. bpo: 21750 .. date: 9230 .. nonce: _Ycvgi .. section: Library

mock_open.read_data can now be read from each instance, as it could in Python 3.3.

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.. bpo: 24552 .. date: 9229 .. nonce: VTO6sf .. section: Library

Fix use after free in an error case of the _pickle module.

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.. bpo: 24514 .. date: 9228 .. nonce: _xRb2r .. section: Library

tarfile now tolerates number fields consisting of only whitespace.

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.. bpo: 19176 .. date: 9227 .. nonce: 8V6nOK .. section: Library

Fixed doctype() related bugs in C implementation of ElementTree. A deprecation warning no longer issued by XMLParser subclass with default doctype() method. Direct call of doctype() now issues a warning. Parser's doctype() now is not called if target's doctype() is called. Based on patch by Martin Panter.

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.. bpo: 20387 .. date: 9226 .. nonce: aAbWbQ .. section: Library

Restore semantic round-trip correctness in tokenize/untokenize for tab-indented blocks.

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.. bpo: 24456 .. date: 9225 .. nonce: yYSd2u .. section: Library

Fixed possible buffer over-read in adpcm2lin() and lin2adpcm() functions of the audioop module.

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.. bpo: 24336 .. date: 9224 .. nonce: 4a5y1m .. section: Library

The contextmanager decorator now works with functions with keyword arguments called "func" and "self". Patch by Martin Panter.

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.. bpo: 24522 .. date: 9223 .. nonce: PkcqCA .. section: Library

Fix possible integer overflow in json accelerator module.

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.. bpo: 24489 .. date: 9222 .. nonce: GJnMcW .. section: Library

ensure a previously set C errno doesn't disturb cmath.polar().

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.. bpo: 24408 .. date: 9221 .. nonce: vPb5UK .. section: Library

Fixed AttributeError in measure() and metrics() methods of tkinter.Font.

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.. bpo: 14373 .. date: 9220 .. nonce: CTYZ4J .. section: Library

C implementation of functools.lru_cache() now can be used with methods.

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.. bpo: 24347 .. date: 9219 .. nonce: CPPDb8 .. section: Library

Set KeyError if PyDict_GetItemWithError returns NULL.

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.. bpo: 24348 .. date: 9218 .. nonce: U11rhr .. section: Library

Drop superfluous incref/decref.

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.. bpo: 24359 .. date: 9217 .. nonce: -IRNG9 .. section: Library

Check for changed OrderedDict size during iteration.

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.. bpo: 24368 .. date: 9216 .. nonce: 550kDT .. section: Library

Support keyword arguments in OrderedDict methods.

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.. bpo: 24362 .. date: 9215 .. nonce: cHYce5 .. section: Library

Simplify the C OrderedDict fast nodes resize logic.

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.. bpo: 24377 .. date: 9214 .. nonce: Gp1Bqr .. section: Library

Fix a ref leak in OrderedDict.repr.

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.. bpo: 24369 .. date: 9213 .. nonce: qFl7lZ .. section: Library

Defend against key-changes during iteration.

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.. bpo: 24373 .. date: 9212 .. nonce: 6TL2XG .. section: Tests

_testmultiphase and xxlimited now use tp_traverse and tp_finalize to avoid reference leaks encountered when combining tp_dealloc with PyType_FromSpec (see issue #16690 for details)

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.. bpo: 24458 .. date: 9211 .. nonce: 1egApX .. section: Documentation

Update documentation to cover multi-phase initialization for extension modules (PEP 489). Patch by Petr Viktorin.

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.. bpo: 24351 .. date: 9210 .. nonce: XeSVl5 .. section: Documentation

Clarify what is meant by "identifier" in the context of string.Template instances.

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.. bpo: 24432 .. date: 9209 .. nonce: IvUSiN .. section: Build

Update Windows builds and OS X 10.5 installer to use OpenSSL 1.0.2c.