貌似原来下载学习安装的是3.1版的，有些语法就改变了！

python 2.5系列最流行，也是一个最稳定的版本应该是python-2.5.4吧！
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Python 2.7 Alpha 3

Changes: This version contains many features first released in Python 3.1. An ordered dictionary type is included. New unittest features include test skipping and new assert methods. A much faster io module was added. Automatic numbering of fields in the str.format() method was added. Float repr improvements were backported from 3.x. Tile support was added for Tkinter. A backport of the memoryview object from 3.x was added. Set literals and dictionary views were added. A new syntax for nested with statements was added.

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Python 2.6.5 RC 1

下载: 075K9s2c8@1M7q4)9K6b7g2)9J5c8W2)9J5c8Y4N6%4N6#2)9J5k6i4m8&6N6r3S2G2L8W2)9J5k6h3!0J5k6#2)9J5c8X3k6@1M7q4)9J5c8Y4m8&6N6r3S2G2L8W2)9J5c8U0u0Q4x3X3f1$3i4K6u0W2y4g2)9J5c8W2m8&6N6r3S2G2L8W2)9J5k6o6u0Q4x3X3f1$3i4K6u0W2y4i4u0U0x3g2)9J5k6i4c8S2M7W2)9J5k6h3u0*7x3R3`.`.
更多: 887K9s2c8@1M7q4)9K6b7g2)9J5c8W2)9J5c8Y4N6%4N6#2)9J5k6i4m8&6N6r3S2G2L8W2)9J5k6h3!0J5k6#2)9J5c8X3k6@1M7q4)9J5c8Y4m8&6N6r3S2G2L8W2)9J5c8U0u0Q4x3X3f1$3i4K6u0W2y4g2)9J5c8R3`.`.

ChangeLog:
Many issues have been resolved.

Python 3.1.2 RC1 / 2.7 Alpha 4

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