Lists in Python come with several built-in methods that allow you to modify them in-place. Methods like `append()`, `insert()`, `pop()`, and `remove()` alter the original list directly without creating a new one.
Key Points
.append(value): Adds a single element to the end of the list.
.insert(index, value): Inserts an element at a specified position, shifting other elements to the right.
.pop([index]): Removes and returns the element at the specified index. If no index is provided, it removes and returns the last item.
.remove(value): Searches the list and removes the first occurrence of the specified value.