iterate over list while changing it

Дамјан Георгиевски gdamjan at gmail.com
Thu Oct 1 02:44:13 CEST 2009


>> a = [1, 2, 3, 4, 5, 6]
>> 
>> for i, x in enumerate(a):
> 
> If you change a list while iterating over, start at the tail.
> 
> ...reversed(enumerate(a))

Python 2.6.2 (r262:71600, Jul 20 2009, 02:19:59) 
>>> a = [1, 2, 3, 4, 5, 6]
>>> reversed(enumerate(a))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: argument to reversed() must be a sequence


> no such list method, which mean you did not run the above before
> posting. Boo!



-- 
дамјан ( http://softver.org.mk/damjan/ )

Teaching a pig to sing wastes your time & annoys the pig.



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