Iterate a list as pair (current, next) in Python

Question

I sometimes need to iterate a list in Python looking at the \"current\" element and the \"next\" element. I have, till now, done so with code like:

for curre         


        

Answer 1

Pairs from a list using a list comprehension

the_list = [1, 2, 3, 4]
pairs = [[the_list[i], the_list[i + 1]] for i in range(len(the_list) - 1)]
for [current_item, next_item] in pairs:
    print(current_item, next_item)

Output:

(1, 2)
(2, 3)
(3, 4)