Get the first item from an iterable that matches a condition

Question

I would like to get the first item from a list matching a condition. It\'s important that the resulting method not process the entire list, which could be quite large. For e

Answer 1

Oneliner:

thefirst = [i for i in range(10) if i > 3][0]

If youre not sure that any element will be valid according to the criteria, you should enclose this with try/except since that [0] can raise an IndexError.