Can anyone explain me how this code works

Question

https://code.sololearn.com/cv171P9PSo6F/?ref=app

Answer 1

Just output tells you.
In that iterable range()
Fisrt index is start index, next is end index ( not inclusive), 3rd one is step count.
range(start, end, step_count)
Ex:
for outer in range(5,10,4):
For outer values are 5, in next iteration 5+4=9
In next 9+4=13 but it is exceeds end value 10 so it is not taken and loop exits..
Edit : revise this for more clarity :
https://www.sololearn.com/learn/JUMP_LINK__&&__Python__&&__JUMP_LINK/2434/

Answer 2

Outer loop loops over the following range=>5,9

So during first iteration ,
Inner loop loops over the following range=>1,3 with outer being assigned 5
and prints
5,1
5,3

During second iteration
inner loop loops over the following range =>1,3,5,7 with outer being assigned 9
and prints
9,1
9,3
9,5
9,7

I highly recommend you to go through python course again if you cudn't understand at all how this worked