Contents

• Abstract
• Release Manager and Crew
• Release Schedule
• Maintenance Releases
• Features for 3.1
• Footnotes
• Copyright

Abstract

This document describes the development and release schedule for Python 3.1. The schedule primarily concerns itself with PEP-sized items. Small features may be added up to and including the first beta release. Bugs may be fixed until the final release.

Release Manager and Crew

Release Schedule

• 3.1a1 March 7, 2009
• 3.1a2 April 4, 2009
• 3.1b1 May 6, 2009
• 3.1rc1 May 30, 2009
• 3.1rc2 June 13, 2009
• 3.1 final June 27, 2009

Maintenance Releases

3.1 is no longer maintained. 3.1 received security fixes until June 2012.

Previous maintenance releases are:

• v3.1.1rc1 2009-08-13
• v3.1.1 2009-08-16
• v3.1.2rc1 2010-03-06
• v3.1.2 2010-03-20
• v3.1.3rc1 2010-11-13
• v3.1.3 2010-11-27
• v3.1.4rc1 2011-05-29
• v3.1.4 2011-06-11
• v3.1.5rc1 2012-02-23
• v3.1.5rc2 2012-03-15
• v3.1.5 2012-04-06

Features for 3.1

• importlib
• io in C
• Update simplejson to the latest external version 1.
• Ordered dictionary for collections 2.
• auto-numbered replacement fields in str.format() strings 3
• Nested with-statements in one with statement

Footnotes

1

http://bugs.python.org/issue4136

2

PEP 372 http://www.python.org/dev/peps/pep-0372/

3

http://bugs.python.org/issue5237

Copyright

This document has been placed in the public domain.