Please, what is wrong with this code

Question

Any time I run this code, it says Linked_list not callable.
Please, help fix this code
https://code.sololearn.com/cvy4C5qfY800/?ref=app

Answer 1

Is there any library like linked list ? I search in pypi and couldn't find it

Answer 2

Sorry, l forgot to give our the linked list module l created.
I bring it soon

Answer 3

You need to install linklist libreary first. You can’t do that in sololearn.