Python Project: A basic to-do list in Python using flask

to do list in python - python project

Python Project: Creating a To-Do List Application involves integrating a simple To-Do list functionality into your server. To develop a to do lists, you can use Python Flask framework on the server-side (backend) and HTML/JavaScript on the client-side (frontend). Below, I’ll provide a basic example using Flask (a Python web framework) for the backend functionality and HTML/JavaScript for the frontend Design.

Step 1: Set Up Your Flask Application

Method 1: Installing Flask using pipe

pip install Flask

If you want to install Flask without using the command prompt (CMD) or terminal, you can use an integrated development environment (IDE) like PyCharm or Visual Studio Code, which provides a graphical interface for package management. Here’s how to install Flask using these IDEs:

Method 2: Installing Flask with PyCharm

  1. Download and install PyCharm, which is available in both a free Community edition and a paid Professional edition.
  2. Open PyCharm and create a new Python project or open an existing one.
  3. In PyCharm, go to File -> Settings (Windows/Linux) or PyCharm -> Preferences (macOS).
  4. In the settings, navigate to Project -> <Your Project Name> -> Python Interpreter.
  5. Click on the gear icon in the top-right corner of the Python interpreter panel and select “Add…” to add a new package.
  6. Search for “Flask” and click “Install Package.”

Flask will be installed for your project, and you can use it within your Python code.

Method 3: Installing Flask with Visual Studio Code (VS Code)

  1. Download and install Visual Studio Code.
  2. Open VS Code and create a new Python project or open an existing one.
  3. Make sure you have the Python extension installed. If not, you can install it from the VS Code extensions marketplace.
  4. Open the integrated terminal in VS Code by clicking View -> Terminal.
  5. In the terminal, navigate to your project’s directory.
  6. Use pip to install Flask by running the following command:
pip install flask

Flask will be installed for your project, and you can use it within your Python code.

Both PyCharm and Visual Studio Code provide user-friendly ways to manage Python packages like Flask, making it convenient to develop Python web applications. Choose the IDE that suits your preferences and workflow.

Here’s a basic Flask application that serves a To-Do List webpage:

from flask import Flask, request, render_template

app = Flask(__name__)

# Initialize an empty list to store tasks
tasks = []

def index():
    return render_template('todo.html', tasks=tasks)

@app.route('/add_task', methods=['POST'])
def add_task():
    task_name = request.form.get('task_name')
    if task_name:
    return render_template('todo.html', tasks=tasks)

if __name__ == '__main__':

Step 2: Create HTML and JavaScript for the Frontend

Create an HTML template called todo.html in a folder named templates:

<!DOCTYPE html>
<html lang="en">
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>To-Do List</title>
    <h1>To-Do List</h1>
    <ul id="task-list">
        {% for task in tasks %}
        <li>{{ task }}</li>
        {% endfor %}
    <form id="add-task-form" action="/add_task" method="post">
        <input type="text" id="task-name" name="task_name" placeholder="Add a new task" required>
        <button type="submit">Add</button>

Step 3: Add JavaScript for Interactivity

Add JavaScript to handle user interactions. Create a file named todo.js and include it in your HTML:

<script src="todo.js"></script>

In todo.js, you can add client-side interactivity, such as handling the form submission:

document.addEventListener('DOMContentLoaded', function () {
    const form = document.getElementById('add-task-form');
    form.addEventListener('submit', function (event) {
        const taskName = document.getElementById('task-name').value;
        if (taskName) {
            const taskList = document.getElementById('task-list');
            const li = document.createElement('li');
            li.textContent = taskName;

Step 4: Run Your Flask Application

Run your Flask application:


Python Project To-Do List application should now be accessible at http://localhost:5000/. Users can add tasks, and the list will update dynamically.

Read more:

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