How it works?

Question

dont understand why i can add 'str' but cant 'int'.
https://code.sololearn.com/csjsCNefgCY0/?ref=app

Answer 1

or n[1:1] = "1"

list and strings are iterable.
1 is an integer an not iterable.

The types of the items in the list of the left side dont matter.

Answer 2

It not depends on int... For append slice you must use a Iterable object (and string its)... Try with:

n[1:1]= [1]

Here you use a list (thats an iterable object) when you cant get errors

Answer 3

i forgot about iterable.. for 'append' ))) thanks