I believe "if not A:" is the most pythonic, but depending on what you're doing a list might not be the right thing to use at all. A little while ago I got some help from this malining list in dealing with a situation where lists really were not efficient (finding prime numbers...for fun). In my case the ultimate conclusion was to run any over a generator. In my case this worked wonderfully, but there are many cases where this would not. If you only need to know if the list is empty, and don't care what's in it, then such an approach might work for you.
On Wed, 25 Mar 2009 20:08:53 +0530 (IST) srinivasan srinivas <sri_anna...@yahoo.co.in> wrote: > > For ex: to check list 'A' is empty or not.. > if A == []: > if A.count == 0: > if len(A) == 0: > if not A: > > Thanks, > Srini > > > Add more friends to your messenger and enjoy! Go to > http://messenger.yahoo.com/invite/ -- > http://mail.python.org/mailman/listinfo/python-list -- Josh Dukes MicroVu IT Department -- http://mail.python.org/mailman/listinfo/python-list
