linked_list.py

class Node:
    def __init__(self, value) -> None:
        self.value = value
        self.next = None


class SingleList:
    def __init__(self) -> None:
        self.head = None

    def print_list(self):
        print_value = self.head
        while print_value is not None:
            print(print_value.value)
            print_value = print_value.next


node_a = Node("a")
node_b = Node("b")
node_c = Node("c")
s_list = SingleList()
s_list.head = node_a
s_list.head.next = node_b
node_b.next = node_c
print(s_list.print_list())