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Python 2.7 Release

Note: A bugfix release, 2.7.10, is currently available. Its use is recommended.

Python 2.7 was released on July 3rd, 2010.

Python 2.7 is scheduled to be the last major version in the 2.x series before it moves into an extended maintenance period. This release contains many of the features that were first released in Python 3.1. Improvements in this release include:

- An ordered dictionary type

- New unittest features including test skipping, new assert methods, and test discovery

- A much faster io module

- Automatic numbering of fields in the str.format() method

- Float repr improvements backported from 3.x

- Tile support for Tkinter

- A backport of the memoryview object from 3.x

- Set literals

- Set and dictionary comprehensions

- Dictionary views

- New syntax for nested with statements

- The sysconfig module

What’s New in Python 2.7

Author : A.M. Kuchling (amk at amk.ca) 

This article explains the new features in Python 2.7. Python 2.7 was released on July 3, 2010.

Numeric handling has been improved in many ways, for both floating-point numbers and for the Decimal class. There are some useful additions to the standard library, such as a greatly enhanced unittest module, the argparse module for parsing command-line options, convenient OrderedDict and Counter classes in the collections module, and many other improvements.

Python 2.7 is planned to be the last of the 2.x releases, so we worked on making it a good release for the long term. To help with porting to Python 3, several new features from the Python 3.x series have been included in 2.7.

This article doesn’t attempt to provide a complete specification of the new features, but instead provides a convenient overview. For full details, you should refer to the documentation for Python 2.7 at https://docs.python.org. If you want to understand the rationale for the design and implementation, refer to the PEP for a particular new feature or the issue on https://bugs.python.org in which a change was discussed. Whenever possible, “What’s New in Python” links to the bug/patch item for each change.