Why is iter() needed here?

Question

code:
l = [1, 2, 3, 4]

l = iter(l)

for i in l:
print(i, next(l))

Why do you have to call iter() when the for loop already has done that?

Answer 1

For behind the scenes use iter so in that scenario in one loop you process two values.

Answer 2

For fun ;-)