Python2.5 beta1 发布

[xyzxyz1111]

可以到http://www.python.org 上下载

What's New in Python 2.5

A.M. Kuchling

[e-mail]


* Contents
* 1 PEP 308: Conditional Expressions
* 2 PEP 309: Partial Function Application
* 3 PEP 314: Metadata for Python Software Packages v1.1
* 4 PEP 328: Absolute and Relative Imports
* 5 PEP 338: Executing Modules as Scripts
* 6 PEP 341: Unified try/except/finally
* 7 PEP 342: New Generator Features
* 8 PEP 343: The 'with' statement
o 8.1 Writing Context Managers
* 9 PEP 352: Exceptions as New-Style Classes
* 10 PEP 353: Using ssize_t as the index type
* 11 PEP 357: The '__index__' method
* 12 Other Language Changes
o 12.1 Interactive Interpreter Changes
o 12.2 Optimizations
* 13 New, Improved, and Deprecated Modules
o 13.1 The ctypes package
o 13.2 The ElementTree package
o 13.3 The hashlib package
o 13.4 The sqlite3 package
* 14 Build and C API Changes
* 15 Other Changes and Fixes
* 16 Porting to Python 2.5
* 17 Acknowledgements
* About this document ...

[xyzxyz1111]

Sorry ,是alpha 1, 不是beta 1

[michael_g_hu]

hao

[ChumpKlutz]

那问一下这个2.5跟2.4.2又有些什么不同呢

[xyzxyz1111]

主要区别就是What's New 里面说的
详细的可以去看
http://docs.python.org/dev/whatsnew/whatsnew25.html

[limodou]

我想是with吧

[shhgs]

Python的变化真是大。回顾各个版本的升级，给我印象最深的是：

2.0 --> 2.1 list comprehension
2.1 --> 2.2 new classes
2.2 --> 2.3 generator
2.3 --> 2.4 method decorator

现在2.5来了，这个最重要的变化是什么呢？

with还是yield？

[shhgs]

with对类库的编写和使用会产生非常深远的影响

yield的coroutine也是一件很有力的工具。但是coroutine是一把双刃剑。用得好当然很好，用得不好，简直是另一个goto。

[ccat]

现在还是Alpha 1吧……

[xiangding]

好东东，等着2.5正式版出来