Append

Definition

The append method in Python adds a single element to the end of an existing list. It modifies the original list and does not return a new list.

5 Must Know Facts For Your Next Test

1. The syntax for append is list.append(item).
2. append modifies the original list and does not create a new one.
3. Only one item can be added using append at a time.
4. If you append a list to another list, the entire list is added as a single element.
5. append operation has an average time complexity of O(1).

Review Questions

• What is the effect of calling append on an existing list?
• Can you add multiple elements to a list using a single call to append?
• What will be the result of appending one list to another?

Related terms

extend: The extend method adds all elements of an iterable (like a list) to the end of the current list.

insert: The insert method allows you to add an element at a specified position in a list.

pop: The pop method removes and returns the last item from a list by default or an item at a specified index.