Python 2.7 beta 2 发布

这是 Python 2.7 的第二个Beta测试版本。

Python（[KK] 英语发音： /'paɪθɑn/, [DJ] 英语发音： /ˈpaiθən/），是一种面向对象、直译式计算机程序设计语言，也是一种功能强大而完善的通用型语言，已经具有十多年的发展历史，成熟且稳定。这种语 言具有非常简捷而清晰的语法特点，适合完成各种高层任务，几乎可以在所有的操作系统中运行。目前，基于这种语言的相关技术正在飞速的发展，用户数量 急剧扩大，相关的资源非常多。

下 载:Python 2.7 Beta 2

Python 2.7 beta 2 was released on May 8th, 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 and new assert methods.
• 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