def insertNodeAtPosition(llist, data, position):
    New_node = SinglyLinkedListNode(data)
    if position == 0: # like insert_At_first
        New_node.next = llist
        llist = New_node
    else :
        New_Pos = position
        current = llist
        lenn = 0
        while current.next:
            lenn += 1
            if New_Pos == lenn :
                break
            current = current.next
        New_node.next = current.next
        current.next = New_node
    return llist