I have a Python script which takes as input a list of integers, which I need to work with four integers at a time. Unfortunately, I don't have control of the input, or I'd have it passed in as a list of four-element tuples. Currently, I'm iterating over it this way:
for i in range(0, len(ints), 4):
# dummy op for example code
foo += ints[i] * ints[i + 1] + ints[i + 2] * ints[i + 3]
It looks a lot like "C-think", though, which makes me suspect there's a more pythonic way of dealing with this situation. The list is discarded after iterating, so it needn't be preserved. Perhaps something like this would be better?
while ints:
foo += ints[0] * ints[1] + ints[2] * ints[3]
ints[0:4] = []
Still doesn't quite "feel" right, though. :-/
Update: With the release of Python 3.12, I've changed the accepted answer. For anyone who has not (or cannot) make the jump to Python 3.12 yet, I encourage you to check out the previous accepted answer or any of the other excellent, backwards-compatible answers below.
Related question: How do you split a list into evenly sized chunks in Python?