This question uses the following definition for a Node in a singly linked list:Define the function print$\_$linked$\_$list$($head$)$ that prints out the data items in all the nodes, one per line, in the linked list that starts at the head node.

For example, the list above would generate the following ouptut:

$10$

$20$

$30$

$40$

Notes:

We will test with various length lists with various values in the nodes.

If the head is None then nothing is printed.

For example:

$\backslash$table$[[$Test$,$Result$],[$head $=$ Node$(10),10],[$head$.$next$\_$node $=$ Node$(20),],[$head$.$next$\_$node.next$\_$node $=$ Node$(30),],[$head$.$next$\_$node.next$\_$node.next$\_$node $=$ Node$(40),20],[$print$\_$linked$\_$list$($head$),30],[$start $=$ Node$(\text{'}$y$\text{'}),40],[\backslash$table$[[$start$.$next$\_$node $=$ Node$(\text{'}$a$\text{'})],[$start$.$next$\_$node.next$\_$node $=$ Node$(\text{'}{?}^{\text{'}}\text{'})]],$y$],[$start$.$next$\_$node.next$\_$node.next$\_$node $=$ Node$(\text{'}$a$\text{'}),],[$start$.$next$\_$node.next$\_$node.next$\_$node.next$\_$node $=$ Node$(\text{'}$y$\text{'}),$y$],[$print$\_$linked$\_$list$($start$),$y$]]$