Why doesn't 8 appear in the answer

Question

When I insert two numbers only one appears, why?
https://code.sololearn.com/c60aQ6GmepoH/?ref=app

Answer 1

That's not how insert works.
.insert() methid takes two arguments:

First argument is for the index in which you want to insert your value in

Second argument is the value you are inserting

Since index 8 does not exist, it will append to the end of the list.