Linked Lists- Occurences of a Node

    def count_occurences_iterative(self, data):

            count = 0
            current = self.head
            while current:
                if current.data == data:
                    count += 1
                current = current.next

            return count 

        def count_occurences_recursive(self, node, data):

            if not node:
                return 0 
            if node.data == data:
                return 1 + self.count_occurences_recursive(node.next, data)
            else:
                return self.count_occurences_recursive(node.next, data)