Python 3000 alpha 2 放出

Python 3000（又称“Py3K”，发布为Python 3.0）是Python语言的一个新版本，它与2.x系列是不兼容的。语言的大部分没有改变，但是许多细节，尤其是像字典和字符串这样的内建对象的工作方式有了很大的改变，并且很多受到抨击的特性已经被去掉了。


3.0a2公布时间为美国时间:2007年12月7日 周五 上午10时30分

下载地址
http://www.python.org/download/releases/3.0/

作者的Blog 原文如下:

This is just a quick post to let everyone know that Python 3.0a2 is released as of 10:30am PST (18:30 UTC) today (Friday December 7, 2007).

I'm grateful to the many people who have contributed to this release, in particular new core developers Christian Heimes and Amaury Forgeot d'Arc.

I wish I could list the many things that are new since 3.0a1 was released on August 31, but there are already many places where you can read up on that, so I'll skip this now.

However, I do want to mention that based upon the feedback for 3.0a1, we've decided to make the 'bytes' type immutable, and create a separate mutable bytes type, 'bytearray'. These two types are mutually compatible, but in the majority of cases you'll be using bytes, not bytearray.

I should also note that we've run into an issue with the Windows installers -- see the release page above. If anyone can help this, please write to python-dev at python.org. (The script that creates the installer is in the distribution as Tools/msi/msi.py.)

And finally, a word of thanks to all the GHOP contestants who contributed documentation updates, and to Georg Brandl for collecting these and submitting them to Subversion. There are still many more tasks available!

我只关心效率。
现在的2.5已经很好用了。

我一直认为，很多高级的特性，功能只是屠龙之技。

新的理论从少数人的主张到一统天下，并不是因为这个理论说服了别人抛弃旧观点，而是因为一代人的逝去。