Can you add values from both these lists?

To combine two lists in Python you can use the + operator or the extend() method. For example, if list1 = [1, 2, 3] and list2 = [4, 5, 6], then combined = list1 + list2 yields [1, 2, 3, 4, 5, 6]. Using extend modifies the original list: list1.extend(list2) results in list1 becoming [1, 2, 3, 4, 5, 6]. Both approaches run in O(n + m) time, where n and m are the lengths of the two lists, and O(n + m) space if you create a new list. If you need to avoid copying, you can iterate over both lists and process elements on the fly.