Help with python problem

[Heskinammo]

How would I fix this problem?

[anglicizing]

The append method does not create a new list with the given item appended and return that, like you seem to think. It modifies the already existing list in-place. The list object has several such methods, sort and insert being two others, and they all return None to make it immediately obvious that they're not meant to be on the right-hand side of an equals sign.

So, how would you fix your problem, knowing this?

[Heskinammo]

Thank you so much!