Answer by Laurent Lyaudet for List changes unexpectedly after assignment. Why is this and how can I prevent it?

There is another way of copying a list that was not listed until now: adding an empty list: l2 = l + [].

I tested it with Python 3.8:

l = [1,2,3]l2 = l + []print(l,l2)l[0] = 'a'print(l,l2)

It is not the best answer, but it works.