Yes, you are right. Since Python 3.12, type is a soft keyword. Overwriting soft keywords within a scope is bad practice. However, when I wrote this code, type wasn't a soft keyword. That's a typical problem with legacy code. :)

Perfectly balanced, as all things should be.

Its allways better to check like
if(name == null) throw new IllegalArgumentException("name must not be null");
even if the description says that only valid strings appear

You can use Math.abs(value) for the absolute value.

I think this is a good solution, but there are two points to improve it.

First you can use the variable head instead of currentNode for better readability and secondly if currentNode.data is null you will get an NullPointerExceptioin because you used rightly equals(). So you have to check if currentNode.data is not not null and continue the loop if data is null.

When you get paid for lines of code ....

I think this solution is good, because it's returns the origin List instead of a new List. It's not totally clear whether to return a new list or the original one.

any way to report this solution?

This solutions helps me totaly to understand classes in python. Its a look under the hood :D

I think this katar is to easy for 7 kyu.

This is smart!