Write and test the following function:

def stack_split_alt(source): """ ------------------------------------------------------- Splits the source stack into separate target stacks. When function is done source stack is empty. Values are alternately pushed onto the returned target stacks. Use: target1, target2 = stack_split(source) ------------------------------------------------------- Parameters: source - the stack to split into two parts (Stack) Returns: target1 - contains alternating values from source (Stack) target2 - contains other alternating values from source (Stack) ------------------------------------------------------- """ 

'Alternately' means that a stack that contains the values (top to bottom) 8, 14, 12, 9, 8, 7, 5, 1 should produce a stack containing the values (top to bottom) 5, 8, 12, 8 and a second stack containing 1, 7, 9, 14.