Samuele Pedroni wrote: > If you are looking for rough edges about nested scopes in Python > this is probably worse: > > >>> x = [] > >>> for i in range(10): > ... x.append(lambda : i) > ... > >>> [y() for y in x] > [9, 9, 9, 9, 9, 9, 9, 9, 9, 9]
As an aside, is there any chance that this could be changed in 3.0? I.e. have the for-loop create a new binding for the loop variable on each iteration. I know Guido seems to be attached to the idea of being able to use the value of the loop variable after the loop exits, but I find that to be a dubious practice readability-wise, and I can't remember ever using it. There are other ways of getting the same effect, e.g. assigning it to another variable before breaking out of the loop, or putting the loop in a function and using return. -- Greg Ewing, Computer Science Dept, +--------------------------------------+ University of Canterbury, | Carpe post meridiam! | Christchurch, New Zealand | (I'm not a morning person.) | [EMAIL PROTECTED] +--------------------------------------+ _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
