(Contributed by Petri Lehtinen in :issue:`12170`)
+* The ``rjust()``, ``ljust()``, and ``center()`` methods of :class:`bytes`
+ and :class:`bytearray` now accept a :class:`bytearray` for the ``fill``
+ argument. (Contributed by Petri Lehtinen in :issue:`12380`.)
+
* New methods have been added to :class:`list` and :class:`bytearray`:
``copy()`` and ``clear()`` (:issue:`10516`). Consequently,
:class:`~collections.abc.MutableSequence` now also defines a
* :c:macro:`PyUnicode_READ`, :c:macro:`PyUnicode_READ_CHAR`, :c:macro:`PyUnicode_WRITE`
* :c:macro:`PyUnicode_MAX_CHAR_VALUE`
+* :c:macro:`PyArg_ParseTuple` now accepts a :class:`bytearray` for the ``c``
+ format (:issue:`12380`).
+
Deprecated
Deprecated Python modules, functions and methods
------------------------------------------------
+* Passing a non-empty string to ``object.__format__()`` is deprecated, and
+ will produce a :exc:`TypeError` in Python 3.4 (:issue:`9856`).
* The ``unicode_internal`` codec has been deprecated because of the
:pep:`393`, use UTF-8, UTF-16 (``utf-16-le`` or ``utf-16-be``), or UTF-32
(``utf-32-le`` or ``utf-32-be``)
factory functions by subclassing the private classes will need to change to
subclass the now-public classes.
+* The undocumented debugging machinery in the threading module has been
+ removed, simplifying the code. This should have no effect on production
+ code, but is mentioned here in case any application debug frameworks were
+ interacting with it (:issue:`13550`).
+
Porting C code
--------------
- Issue #11272: On Windows, input() strips '\r' (and not only '\n'), and
sys.stdin uses universal newline (replace '\r\n' by '\n').
-- issue #11828: startswith and endswith don't accept None as slice index.
+- Issue #11828: startswith and endswith now accept None as slice index.
Patch by Torsten Becker.
- Issue #10830: Fix PyUnicode_FromFormatV("%c") for non-BMP characters on