155 lines
4.5 KiB
ReStructuredText
155 lines
4.5 KiB
ReStructuredText
****************************
|
|
What's New in Python 2.7
|
|
****************************
|
|
|
|
:Author: A.M. Kuchling (amk at amk.ca)
|
|
:Release: |release|
|
|
:Date: |today|
|
|
|
|
.. $Id$
|
|
Rules for maintenance:
|
|
|
|
* Anyone can add text to this document. Do not spend very much time
|
|
on the wording of your changes, because your text will probably
|
|
get rewritten to some degree.
|
|
|
|
* The maintainer will go through Misc/NEWS periodically and add
|
|
changes; it's therefore more important to add your changes to
|
|
Misc/NEWS than to this file.
|
|
|
|
* This is not a complete list of every single change; completeness
|
|
is the purpose of Misc/NEWS. Some changes I consider too small
|
|
or esoteric to include. If such a change is added to the text,
|
|
I'll just remove it. (This is another reason you shouldn't spend
|
|
too much time on writing your addition.)
|
|
|
|
* If you want to draw your new text to the attention of the
|
|
maintainer, add 'XXX' to the beginning of the paragraph or
|
|
section.
|
|
|
|
* It's OK to just add a fragmentary note about a change. For
|
|
example: "XXX Describe the transmogrify() function added to the
|
|
socket module." The maintainer will research the change and
|
|
write the necessary text.
|
|
|
|
* You can comment out your additions if you like, but it's not
|
|
necessary (especially when a final release is some months away).
|
|
|
|
* Credit the author of a patch or bugfix. Just the name is
|
|
sufficient; the e-mail address isn't necessary.
|
|
|
|
* It's helpful to add the bug/patch number in a parenthetical comment.
|
|
|
|
XXX Describe the transmogrify() function added to the socket
|
|
module.
|
|
(Contributed by P.Y. Developer; :issue:`12345`.)
|
|
|
|
This saves the maintainer some effort going through the SVN logs
|
|
when researching a change.
|
|
|
|
This article explains the new features in Python 2.7.
|
|
No release schedule has been decided yet for 2.7.
|
|
|
|
.. Compare with previous release in 2 - 3 sentences here.
|
|
add hyperlink when the documentation becomes available online.
|
|
|
|
.. ========================================================================
|
|
.. Large, PEP-level features and changes should be described here.
|
|
.. Should there be a new section here for 3k migration?
|
|
.. Or perhaps a more general section describing module changes/deprecation?
|
|
.. ========================================================================
|
|
|
|
|
|
|
|
Other Language Changes
|
|
======================
|
|
|
|
Some smaller changes made to the core Python language are:
|
|
|
|
* The :func:`int` and :func:`long` types gained a ``bit_length``
|
|
method that returns the number of bits necessary to represent
|
|
its argument in binary::
|
|
|
|
>>> n = 37
|
|
>>> bin(37)
|
|
'0b100101'
|
|
>>> n.bit_length()
|
|
6
|
|
>>> n = 2**123-1
|
|
>>> n.bit_length()
|
|
123
|
|
>>> (n+1).bit_length()
|
|
124
|
|
|
|
(Contributed by Fredrik Johansson and Victor Stinner; :issue:`3439`.)
|
|
|
|
|
|
.. ======================================================================
|
|
|
|
|
|
Optimizations
|
|
-------------
|
|
|
|
To be written.
|
|
|
|
.. ======================================================================
|
|
|
|
New, Improved, and Deprecated Modules
|
|
=====================================
|
|
|
|
As in every release, Python's standard library received a number of
|
|
enhancements and bug fixes. Here's a partial list of the most notable
|
|
changes, sorted alphabetically by module name. Consult the
|
|
:file:`Misc/NEWS` file in the source tree for a more complete list of
|
|
changes, or look through the Subversion logs for all the details.
|
|
|
|
* To be written.
|
|
|
|
.. ======================================================================
|
|
.. whole new modules get described in subsections here
|
|
|
|
.. ======================================================================
|
|
|
|
|
|
Build and C API Changes
|
|
=======================
|
|
|
|
Changes to Python's build process and to the C API include:
|
|
|
|
* To be written.
|
|
|
|
.. ======================================================================
|
|
|
|
Port-Specific Changes: Windows
|
|
-----------------------------------
|
|
|
|
|
|
.. ======================================================================
|
|
|
|
Port-Specific Changes: Mac OS X
|
|
-----------------------------------
|
|
|
|
|
|
.. ======================================================================
|
|
|
|
Porting to Python 2.7
|
|
=====================
|
|
|
|
This section lists previously described changes and other bugfixes
|
|
that may require changes to your code:
|
|
|
|
To be written.
|
|
|
|
.. ======================================================================
|
|
|
|
|
|
.. _acks27:
|
|
|
|
Acknowledgements
|
|
================
|
|
|
|
The author would like to thank the following people for offering
|
|
suggestions, corrections and assistance with various drafts of this
|
|
article: no one yet.
|
|
|