哪个python版本需要从uuu future uuu导入带有u语句？

使用Python2.6.5，我可以使用

with

语句，而无需调用

from\uuuuu future\uuuuu.import with\u语句。如果不专门从
\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu。旧版本（来自文档：

New in version 2.5.

\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

>>> from __future__ import with_statement
>>> with_statement.getOptionalRelease()
(2, 5, 0, 'alpha', 1)
>>> with_statement.getMandatoryRelease()
(2, 6, 0, 'alpha', 0)

这些分别表示第一个版本支持来自未来的带有语句导入的
，以及第一个不使用未来的
而支持导入的版本

另外，请阅读以下内容：

>>> import __future__
>>> help(__future__)