traverseda
/
cpython
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

What's New in Python 3.3: Split improved and new modules, start to write a summary

This commit is contained in:
Victor Stinner 2012-08-05 16:37:12 +02:00
parent 8f17c1c00d
commit 636130ed65
1 changed files with 60 additions and 45 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

105
Doc/whatsnew/3.3.rst
View File

@ -53,6 +53,18 @@ This article explains the new features in Python 3.3, compared to 3.2.
release, so it's worth checking back even after reading earlier versions.
Summary
=======
Major changes since Python 3.2:
* 4 new modules: :mod:`faulthandler`, :mod:`ipaddress`, :mod:`lzma` and :mod:`venv`.
* Syntax changes:
- ``u'unicode'`` syntax is accepted again
- Add ``yield from`` syntax
PEP 405: Virtual Environments
=============================
@ -803,8 +815,54 @@ Builtin functions and types
matching. For example, ``'ß'.casefold()`` returns ``'ss'``.
New and Improved Modules
========================
New Modules
===========
faulthandler
------------
This new debug module contains functions to dump Python tracebacks explicitly,
on a fault (a crash like a segmentation fault), after a timeout, or on a user
signal. Call :func:`faulthandler.enable` to install fault handlers for the
:const:`SIGSEGV`, :const:`SIGFPE`, :const:`SIGABRT`, :const:`SIGBUS`, and
:const:`SIGILL` signals. You can also enable them at startup by setting the
:envvar:`PYTHONFAULTHANDLER` environment variable or by using :option:`-X`
``faulthandler`` command line option.
Example of a segmentation fault on Linux: ::
$ python -q -X faulthandler
>>> import ctypes
>>> ctypes.string_at(0)
Fatal Python error: Segmentation fault
Current thread 0x00007fb899f39700:
File "/home/python/cpython/Lib/ctypes/__init__.py", line 486 in string_at
File "<stdin>", line 1 in <module>
Segmentation fault
ipaddress
---------
The new :mod:`ipaddress` module provides tools for creating and manipulating
objects representing IPv4 and IPv6 addresses, networks and interfaces (i.e.
an IP address associated with a specific IP subnet).
(Contributed by Google and Peter Moody in :pep:`3144`)
lzma
----
The newly-added :mod:`lzma` module provides data compression and decompression
using the LZMA algorithm, including support for the ``.xz`` and ``.lzma``
file formats.
(Contributed by Nadeem Vawda and Per Øyvind Karlsen in :issue:`6715`)
Improved Modules
================
abc
---
@ -1062,30 +1120,6 @@ API changes
changed to match the order displayed by :func:`repr`.
faulthandler
------------
This new debug module contains functions to dump Python tracebacks explicitly,
on a fault (a crash like a segmentation fault), after a timeout, or on a user
signal. Call :func:`faulthandler.enable` to install fault handlers for the
:const:`SIGSEGV`, :const:`SIGFPE`, :const:`SIGABRT`, :const:`SIGBUS`, and
:const:`SIGILL` signals. You can also enable them at startup by setting the
:envvar:`PYTHONFAULTHANDLER` environment variable or by using :option:`-X`
``faulthandler`` command line option.
Example of a segmentation fault on Linux: ::
$ python -q -X faulthandler
>>> import ctypes
>>> ctypes.string_at(0)
Fatal Python error: Segmentation fault
Current thread 0x00007fb899f39700:
File "/home/python/cpython/Lib/ctypes/__init__.py", line 486 in string_at
File "<stdin>", line 1 in <module>
Segmentation fault
ftplib
------
@ -1155,25 +1189,6 @@ written on the :class:`~io.TextIOWrapper` object is immediately handled to its
underlying binary buffer.
ipaddress
---------
The new :mod:`ipaddress` module provides tools for creating and manipulating
objects representing IPv4 and IPv6 addresses, networks and interfaces (i.e.
an IP address associated with a specific IP subnet).
(Contributed by Google and Peter Moody in :pep:`3144`)
lzma
----
The newly-added :mod:`lzma` module provides data compression and decompression
using the LZMA algorithm, including support for the ``.xz`` and ``.lzma``
file formats.
(Contributed by Nadeem Vawda and Per Øyvind Karlsen in :issue:`6715`)
math
----