Insert a node at the head of a linked list. Testing

.py

# RESULT

node1 = SinglyLinkedListNode(1)
node2 = SinglyLinkedListNode(2)
node3 = SinglyLinkedListNode(3)
node1.next = node2
node2.next = node3

result = insertNodeAtHead(node1, 33)
current_node = result

while current_node is not None:
    print(current_node.data)
    current_node = current_node.next