Ich musste das einfach ausprobieren:

% python
Python 2.6.5 (r265:79063, Mar 23 2010, 04:44:21)
[GCC 4.4.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from __future__ import braces
File "", line 1
SyntaxError: not a chance
>>>