Since I’m a data scientist and all, my datasets can be too big to deal with when I’m initially testing an idea. So to test a for loop in Python with just a few examples, I used to do this kind of stuff:
n = 0 for thing in things: print thing n += 1 if n > 10: break
zip is smart in that it stops when the shortest item in the zip stops!
So you can do:
for i, thing in zip(range(5), things): print thing
And it will only show you the first 5 things! And it’s so succinct! This is especially pertinent when your
things is a generator and you can’t necessarily get the
len of it.
Hope that helps you out! It saves me some headache, KeyboardInterrupts, and keystrokes.Go Top