class Node: def __init__(self, data = 0, next = None): self.next = next self. data = data class LinkedList: def __init__(self): self.head = None def insertAtFront(self, data): pass def __str__(self): pass def insertAtTail(self, data): pass def __contains__(self,target): pass

Finish implementation for: InsertAtTail() method, __str__() method, and insertAtFront() method.

Also, add a generator to the Linkedlist class so the next code runs:

for item in my_linked_list:

print(item.data)