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Python

Posted by Kabir Gandhiok
Kabir Gandhiok
12,553 Points

Did not understand why position is decremented by 1

position is decremented by 1 in

shopping_list.insert(position-1, item)

I understand that using insert we have to point to a specific index, but I dont understand why position is decremented by 1, and what will happen if we dont decrement it.

Thanks!

1 Answer

Jesus Mendoza
Jesus Mendoza
23,289 Points

Hey Kabir,

I haven't seen any Python video but I guess it's because arrays start from the index 0, so let's say position has the value of 1 and you want to point to the element of an array in the first position, you have to pass position-1

Alexander Davison
Alexander Davison
65,469 Points

That's actually correct :)

Kabir Gandhiok
Kabir Gandhiok
12,553 Points

Thanks! I get it now! :)

Alexander Davison
Alexander Davison
65,469 Points

Please give Jesus Mendoza a "Best Answer".

It gives the user who receives it (in this case Mendoza) +12 forum points for that topic of your question (in this case Python).

It also places an extra "Green Check Mark" next to the question in the community which is like saying "This question is answered" so other students can see this is answered right off the bat. :smile:

Thank you for understanding. ~Alex