[Python-checkins] cpython: Tweaks to What's New and some referenced docs
nick.coghlan
python-checkins at python.org
Sun Feb 9 01:10:39 CET 2014
http://hg.python.org/cpython/rev/254b4bb1de9e
changeset: 89071:254b4bb1de9e
user: Nick Coghlan <ncoghlan at gmail.com>
date: Sun Feb 09 10:10:24 2014 +1000
summary:
Tweaks to What's New and some referenced docs
files:
Doc/c-api/type.rst | 2 +-
Doc/library/venv.rst | 3 +-
Doc/whatsnew/3.4.rst | 50 +++++++++++++++++++++++--------
3 files changed, 40 insertions(+), 15 deletions(-)
diff --git a/Doc/c-api/type.rst b/Doc/c-api/type.rst
--- a/Doc/c-api/type.rst
+++ b/Doc/c-api/type.rst
@@ -100,7 +100,7 @@
.. c:function:: void* PyType_GetSlot(PyTypeObject *type, int slot)
- Return the function pointer stored int the given slot. If the
+ Return the function pointer stored in the given slot. If the
result is *NULL*, this indicates that either the slot is *NULL*,
or that the function was called with invalid parameters.
Callers will typically cast the result pointer into the appropriate
diff --git a/Doc/library/venv.rst b/Doc/library/venv.rst
--- a/Doc/library/venv.rst
+++ b/Doc/library/venv.rst
@@ -107,7 +107,8 @@
upgraded in-place (defaults to ``False``).
* ``with_pip`` -- a Boolean value which, if true, ensures pip is
- installed in the virtual environment
+ installed in the virtual environment. This uses :mod:`ensurepip` with
+ the ``--default-pip`` option.
.. versionchanged:: 3.4
Added the ``with_pip`` parameter
diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst
--- a/Doc/whatsnew/3.4.rst
+++ b/Doc/whatsnew/3.4.rst
@@ -69,8 +69,9 @@
`changelog <http://docs.python.org/3.4/whatsnew/changelog.html>`_.
.. note:: Prerelease users should be aware that this document is currently in
- draft form. It will be updated substantially as Python 3.4 moves towards
- release, so it's worth checking back even after reading earlier versions.
+ draft form. While it should be close to complete for the Python 3.4
+ release candidates, adjustments and additions to the document may be made
+ up until the final release.
.. seealso::
@@ -132,10 +133,9 @@
a new :mod:`~email.message.Message` subclass
(:class:`~email.contentmanager.EmailMessage`) that :ref:`simplify MIME
handling <whatsnew_email_contentmanager>` (:issue:`18891`).
-* :mod:`plistlib` has a cleaned up interface and support for binary
- plist files (:issue:`14455`)
* The :mod:`ipaddress` module API has been declared stable
+
CPython implementation improvements:
* :ref:`Safe object finalization <whatsnew-pep-442>` (:pep:`442`).
@@ -163,9 +163,13 @@
--------------------------------------------------------------
The new :mod:`ensurepip` module (defined in :pep:`453`) provides a standard
-cross-platform mechanism to boostrap the pip installer into Python
+cross-platform mechanism to bootstrap the pip installer into Python
installations and virtual environments.
+By default, the scripts ``pipX`` and ``pipX.Y`` will be installed (where
+X.Y stands for the version of the Python installation), along with the
+``pip`` Python package and its dependencies.
+
The :mod:`venv` module and the :command:`pyvenv` utility make use of this
module to make ``pip`` readily available in virtual environments. When
using the command line interface, ``pip`` is installed by default, while
@@ -187,12 +191,13 @@
.. note::
- The implementation of PEP 453 is still a work in progress. Refer to
- :issue:`19347` for the progress on additional steps:
-
- * Having the binary installers install ``pip`` by default
- * Recommending the use of ``pip`` in the "Installing Python Module"
- documentation.
+ To avoid conflicts between parallel Python 2 and Python 3 installations,
+ only the versioned ``pip3`` and ``pip3.4`` commands are bootstrapped by
+ default when ``ensurepip`` is invoked directly (including by the CPython
+ installers). ``pyvenv`` ensures that the unqualified ``pip`` command is
+ made available in virtual environments, and ``pip`` can always be
+ invoked via the ``-m`` switch rather than directly to avoid ambiguity on
+ systems with multiple Python installations.
.. seealso::
@@ -257,6 +262,11 @@
File "<stdin>", line 1, in <module>
LookupError: 'rot13' is not a text encoding; use codecs.encode() to handle arbitrary codecs
+ >>> open("foo.txt", encoding="hex")
+ Traceback (most recent call last):
+ File "<stdin>", line 1, in <module>
+ LookupError: 'hex' is not a text encoding; use codecs.open() to handle arbitrary codecs
+
In a related change, whenever it is feasible without breaking backwards
compatibility, exceptions raised during encoding and decoding operations
will be wrapped in a chained exception of the same type that mentions the
@@ -308,6 +318,7 @@
(Contributed by Nick Coghlan in :issue:`7475`, , :issue:`17827`,
:issue:`17828` and :issue:`19619`)
+
.. _whatsnew-pep-451:
PEP 451: A ModuleSpec Type for the Import System
@@ -959,8 +970,6 @@
pickle
------
-protocol 4
-
:mod:`pickle` now supports (but does not use by default) a new pickle protocol,
protocol 4. This new protocol addresses a number of issues that were present
in previous protocols, such as the serialization of nested classes, very large
@@ -973,6 +982,14 @@
PEP written by Antoine Pitrou and implemented by Alexandre Vassalotti.
+plistlib
+--------
+
+:mod:`plistlib` now supports binary plist files, and offers the common
+``load``/``loads``/``dump``/``dumps`` API pattern for serialization formats
+(Contributed by Ronald Oussoren and others in :issue:`14455`).
+
+
poplib
------
@@ -1354,6 +1371,9 @@
accurate signatures for builtins and standard library extension modules
implemented in C.
+Some standard library extension modules have been converted to use Argument
+Clinic in Python 3.4, and :mod:`inspect` has been updated accordingly.
+
.. note::
The Argument Clinic PEP is not fully up to date with the state of the
implementation. This has been deemed acceptable by the release manager
@@ -1369,6 +1389,10 @@
Other Build and C API Changes
-----------------------------
+* The new :c:func:`PyType_GetSlot` function has been added to the stable ABI,
+ allowing retrieval of function pointers from named type slots when using
+ the limited API. (Contributed by Martin von Löwis in :issue:`17162`)
+
* The new :c:func:`Py_SetStandardStreamEncoding` pre-initialization API
allows applications embedding the CPython interpreter to reliably force
a particular encoding and error handler for the standard streams
--
Repository URL: http://hg.python.org/cpython
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