linked list in python example code

linkedlist.py

class Node:
    def __init__(self, data):
        self.data = data
        self.next = None


class LinkedList(object):
    def __init__(self):
        self.head = None

    def print_list(self):
        temp = self.head
        while temp:
            print(temp.data)
            temp = temp.next

    def push(self, new_data):
        new_node = Node(new_data)
        new_node.next = self.head
        self.head = new_node

    @staticmethod
    def insert_after(prev_node, new_data):
        if prev_node is None:
            print("The Given Previous Node Must in LinkedList...")
            return

        new_node = Node(new_data)
        new_node.next = prev_node.next
        prev_node.next = new_node

    def append(self, new_data):

        # 1. Create a new node
        # 2. Put in the data
        # 3. Set next as None
        new_node = Node(new_data)

        # 4. If the Linked List is empty, then make the
        # new node as head
        if self.head is None:
            self.head = new_node
            return

        # 5. Else traverse till the last node
        last = self.head
        while last.next:
            last = last.next

        # 6. Change the next of last node
        last.next = new_node