linked_list.py

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

        self.next = next

    def get_data(self):
        return self.data

    def get_next(self):
        return self.next

    def __str__(self):
        return str(self.data)

    def set_next(self, node):
        self.next = node


class LinkedList:
    def __init__(self, head=None):
        """
    
        """

        self.head = None
        self.count = 0
        self.cur = None

    def insert(self, data, node=None):
        node = Node(data)
        node.set_next(self.head)
        self.head = node

        self.count = self.count + 1
        self.cur = self.head

    def __str__(self):
        s = str()
        curr = self.head
        s = s + str(curr.data)
        while curr.next:

            curr = curr.next
            s = s + str(curr.data)
        return s

    def __iter__(self):
        return self

    def __next__(self):

        temp = self.cur
        if self.cur.next:
            self.cur = self.cur.next

        return temp

    def get_head(self):
        return self.head


linked_list = LinkedList()
linked_list.insert(1)
linked_list.insert(2)
linked_list.insert(3)


print(linked_list)
i = iter(linked_list)

print(next(i))
print(next(i))
print(next(i))

321
3
2
1