def add(self, new_data): temp = Node(new_data) if self.is_empty(): self.tail = temp temp.set_next(self.head) self.head = temp self.size +=1
def append(self, d): if self.is_empty(): self.add(d) else: temp = Node(d) temp.set_next(None) self.tail.set_next(temp) self.tail = temp self.size +=1