I just found out that you can do this
objecttoaddto = [1,2,3,4]
objecttoaddto +=[5,6]
Which is simpler than
objecttoaddto = [1,2,3,4]
objecttoaddto.append(5)
objecttoaddto.append(6)
Especially if I want to add multiple elements/objects.
Why would I ever want to use the method .append() instead of just += ?