Download Python 3.1.3 / 2.7.1

Python is an object-oriented programming language that can be used to develop simple to complex cross-platform applications. The 3.x series is no longer compatible with the previous release branches, as the Python developers have stripped the language of old code and some design flaws that were present. A few days ago, both version 3.1.3 and version 2.7.1 were released with the following list of changes:

What’s New in Python 3.1.3?

Core and Builtins:

• Issue #10391: Don’t dereference invalid memory in error messages in the ast module.

library:

• Issue #10459: Update CJK character names to Unicode 5.1.
• Issue #10092: Properly reset locale in calendar.Locale*Calendar classes.
• Issue #6098: Don’t claim DOM level 3 conformance in minidom.
• Issue #5762: Fix AttributeError raised by “xml.dom.minidom“ when an empty XML namespace attribute is encountered.
• Issue #1710703: Write structures for an empty ZIP archive when a ZipFile is created in modes ‘a’ or ‘w’ and then closed without adding any files. Raise BadZipfile (rather than IOError) when opening small non-ZIP files.
• Issue #4493: urllib.request adds ‘/’ in front of path components which does not start with ‘/. Common behavior exhibited by browsers and other clients.
• Issue #6378: idle.bat now runs with the appropriate Python version rather than the system default. Patch by Sridhar Ratnakumar.
• Issue #10407: Fix two NameErrors in distutils.
• Issue #10198: fix duplicate header written to wave files when writeframes() is called without data.
• Issue #10467: Fix BytesIO.readinto() after seeking into a position after the end of the file.
• Issue #1682942: configparser supports alternative option/value delimiters.

build:

• Backport r83399 to allow test_distutils to pass on installed versions.
• Issue #1303434: Generate ZIP file containing all PDBs (already done for rc1).
• Stop packaging versioncheck tool (already done for rc1).
• Accept Oracle Berkeley DB 4.8, 5.0 and 5.1 as backend for the dbm extension.

Testing:

• Issue #9424: Replace deprecated assert* methods in the Python test suite.

Documentation:

• Issue #10299: List the built-in functions in a table in functions.rst.

What’s New in Python 2.7.1?

library:

• Issue #10092: Properly reset locale in calendar.Locale*Calendar classes.
• Issue #10459: Update CJK character names to Unicode 5.2.
• Issue #6098: Don’t claim DOM level 3 conformance in minidom.
• Issue #5762: Fix AttributeError raised by “xml.dom.minidom“ when an empty XML namespace attribute is encountered.
• Issue #1710703: Write structures for an empty ZIP archive when a ZipFile is created in modes ‘a’ or ‘w’ and then closed without adding any files. Raise BadZipfile (rather than IOError) when opening small non-ZIP files.
• Issue #4493: urllib2 adds ‘/’ in front of path components which does not start with ‘/. Common behavior exhibited by browsers and other clients.
• Issue #6378: idle.bat now runs with the appropriate Python version rather than the system default. Patch by Sridhar Ratnakumar.
• Issue #10407: Fix one NameError in distutils.
• Issue #10198: fix duplicate header written to wave files when writeframes() is called without data.
• Issue #10467: Fix BytesIO.readinto() after seeking into a position after the end of the file.
• Issue #5111: IPv6 Host in the Header is wrapped inside [ ]† Patch by Chandru.

build:

• Backport r83399 to allow test_distutils to pass on installed versions.
• Issue #1303434: Generate ZIP file containing all PDBs.

Testing:

• Issue #9424: Replace deprecated assert* methods in the Python test suite.

Documentation:

• Issue #10299: List the built-in functions in a table in functions.rst.