link list
# Node class class Node: def __init__(self, data): # Correct constructor self.data = data self.ref = None # Linked List class class LinkedList: def __init__(self): # Correct constructor self.head = None # Insert node at beginning def add_begin(self, data): new_node = Node(data) new_node.ref = self.head self.head = new_node # Print Linked List def print_LL(self): if self.head is None: print("Linked list is empty") else: n = self.head while n is not None: print(n.data, "---->", end...