Building a Python Todo List Web App


A todo list web app is a common project for learning web development with Python. In this comprehensive guide, we'll explore how to build a simple todo list web application using Python and the Flask web framework. You'll learn about web routing, HTML templates, and how to create, read, update, and delete todo items.


Before you begin, make sure you have the following prerequisites in place:

  • Python Installed: You should have Python installed on your local development environment.
  • Flask Installed: Install Flask using pip install Flask.
  • Basic HTML and CSS Knowledge: Familiarity with HTML and CSS is helpful for designing the web interface.

Step 1: Setting Up the Flask App

Start by creating a Flask application and defining the routes.

Sample Flask App Code

Create a basic Flask app with a single route for the todo list:

from flask import Flask, render_template
app = Flask(__name__)
def todo_list():
# Code to fetch and display todo items
return render_template('todo.html')

Step 2: Creating HTML Templates

Design HTML templates for your todo list. You can use these templates to display and manage tasks.

Sample HTML Template

Create a basic HTML template for the todo list:

<!-- todo.html -->
<!DOCTYPE html>
<title>Todo List</title>
<h1>Todo List</h1>
<li>Task 1</li>
<li>Task 2</li>
<!-- Add more tasks dynamically -->


Building a Python todo list web app is an excellent project for learning web development. This guide has introduced you to the basics, but you can explore more features like task creation, deletion, and task status as you enhance your todo list application.