for loop with nested while loop - Python

Question

I have the following code:

lst = [1,2,3,4]

a = 0
i = 0
for i in lst:
    while a < len(lst):
        a += 1
        print(a, i)

And I'd like it to print

However, I am struggling to achieve this. I can only get it to print the first item in the list.

Any help would be appreciated. Thanks

shree.pat18 · Accepted Answer · 2021-06-03 15:16:40Z

3

Move the initialization of a to inside the first loop, so that it gets reset to 0 on every iteration.

lst = [1,2,3,4]

i = 0
for i in lst:
    a = 0
    while a < len(lst):
        a += 1
        print(a, i)

answered Jun 3, 2021 at 15:16

shree.pat18

21.8k3 gold badges45 silver badges65 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Kevin · Accepted Answer · 2021-06-03 15:17:12Z

2

You forgot to revert a to zero after the while loop is completed

lst = [1,2,3,4]

a = 0
i = 0
for i in last:
    while a < len(last):
        a += 1
        print(a, I)
    a = 0 # <-- add this

answered Jun 3, 2021 at 15:17

Kevin

1,24313 silver badges40 bronze badges