append() / extend() / insert()
method
append() adds one item to the end; extend() adds all items from an iterable; insert() adds at a specific index.
Syntax
list.append(item) list.extend(iterable) list.insert(index, item)
Example
python
lst = [1, 2, 3]
lst.append(4) # [1,2,3,4]
lst.extend([5, 6]) # [1,2,3,4,5,6]
lst.insert(0, 0) # [0,1,2,3,4,5,6]
# Spread equivalent
lst2 = [*lst, 7, 8] # [0,1,2,3,4,5,6,7,8]