Should I store len(list) somewhere?

Question

code1:

list=[1,2,3,4,5]
for i in range(len(list)):
    for j in range(len(list)):
        print(i+j)

code2:

list=[1,2,3,4,5]
l=len(list)
for i in range(l):
    for j in range(l):
        print(i+j)

Dose code2 faster than code1?

Answer 1

There will be no noticeable difference. len(somelist) is a very fast O(1) operation. Lists have their length stored internally, so there's very little work to be done when you ask a list for its length.