How to remove 1 element from 1 list and add to it into another one. Repeat this for the entire list

Question

I have a List of element:

L = [1,2,3]

I would like to pop element from list L and add them to another list L2:

I am trying the following code:

for i in range(len(L)):
    L2.append(L.pop())

But is not working