using python

# A single node of a singly linked list
class Node:
    # constructor
    def __init__(self, data=None, second=None):
        self.data = data
        self.next = second


# A Linked List class with a single head node
class LinkedList:
    def __init__(self):
        self.head = None

    # insertion method for the linked list
    def insert(self, data):
        new_node = Node(data)
        if self.head:
            current = self.head
            while current.next:
                current = current.next
            current.next = new_node
        else:
            self.head = new_node

    # print method for the linked list
    def print_ll(self):
        current = self.head
        while current:
            print(current.data)
            current = current.next


# Singly Linked List with insertion and print methods
LL = LinkedList()
LL.insert(7)
LL.insert(9)
LL.insert(6)
LL.print_ll()