Python Linked List: Create a singly linked list, append some items and iterate through the list

Last update on April 01 2025 13:17:06 (UTC/GMT +8 hours)

1. Singly Linked List Creation

Write a Python program to create a singly linked list, append some items and iterate through the list.

Sample Solution:

Python Code:

class Node:
    # Singly linked node
    def __init__(self, data=None):
        self.data = data
        self.next = None
class singly_linked_list:
    def __init__(self):
        # Createe an empty list
        self.head = None
        self.tail = None
        self.count = 0
    def iterate_item(self):
        # Iterate the list.
        current_item = self.head
        while current_item:
            val = current_item.data
            current_item = current_item.next
            yield val
    def append_item(self, data):
        #Append items on the list
        node = Node(data)
        if self.tail:
            self.tail.next = node
            self.tail = node
        else:
            self.head = node
            self.tail = node
        self.count += 1
items = singly_linked_list()
items.append_item('PHP')
items.append_item('Python')
items.append_item('C#')
items.append_item('C++')
items.append_item('Java')
for val in items.iterate_item():
    print(val)
print("\nhead.data: ",items.head.data)
print("tail.data: ",items.tail.data)

Sample Output:

PHP
Python
C#
C++
Java

head.data:  PHP
tail.data:  Java

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to create a singly linked list from a list of integers and then iterate over the list to display each element.
• Write a Python script to build a singly linked list by appending nodes, then use recursion to print all node values.
• Write a Python program to construct a singly linked list from user input, and iterate through it to calculate the sum of its elements.
• Write a Python function to create a singly linked list, append nodes with random values, and print each node’s value along with its memory address.

Python Code Editor:

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