NthNodeFromEnd.py

# Simple Python3 program to find 
# n'th node from end 
class Node: 
	def __init__(self, new_data): 
		self.data = new_data 
		self.next = None
	
class LinkedList: 
	def __init__(self): 
		self.head = None

	# createNode and and make linked list 
	def push(self, new_data): 
		new_node = Node(new_data) 
		new_node.next = self.head 
		self.head = new_node 

	# Function to get the nth node from 
	# the last of a linked list 
	def printNthFromLast(self, n): 
		temp = self.head # used temp variable 
		
		length = 0
		while temp is not None: 
			temp = temp.next
			length += 1
		
		# print count 
		if n > length: # if entered location is greater 
					# than length of linked list 
			print('Location is greater than the' +
						' length of LinkedList') 
			return
		temp = self.head 
		for i in range(0, length - n): 
			temp = temp.next
		print(temp.data) 

# Driver Code		 
llist = LinkedList() 
llist.push(20) 
llist.push(4) 
llist.push(15) 
llist.push(35) 
llist.printNthFromLast(4)