I often find myself storing data in a list of tuples, and I want to ask questions like "what is the index of the first tuple whose 3rd element is x", or "give me the first tuple whose 2nd element is y".
I know I can do [elem for elem in lst if elem[3] == x][0] or (elem for elem in lst if elem[2] == y).next() but it feels kinda ugly; is there a better way? (something like lst.index(x, key=..) or lst.find(y, key=..) would be nice) -- John. -- http://mail.python.org/mailman/listinfo/python-list
