How to Create a To-Do List in Python with File Storage

A Simple Project to Organize Your Tasks & Learn File Handling

Want to build something useful while learning Python? A To-Do List app is a perfect beginner project that teaches you how to work with user input, file handling, and basic Python logic.

In this blog, you'll learn how to create a To-Do List app in Python that saves your tasks to a file — so your data stays even after the program is closed.

🧠 What You'll Learn:

Taking user input in Python
Creating, reading, and writing to text files
Working with simple menus and loops

🧰 Tools Needed:

Python 3 installed
Any text editor or IDE (VS Code, PyCharm, or even Notepad)

📁 Step 1: Create Your Python File

Create a new Python file called:
todo_app.py

🧱 Step 2: Add the Code

python
def load_tasks(filename="tasks.txt"):
    try:
        with open(filename, "r") as file:
            return [line.strip() for line in file.readlines()]
    except FileNotFoundError:
        return []

def save_tasks(tasks, filename="tasks.txt"):
    with open(filename, "w") as file:
        for task in tasks:
            file.write(task + "\n")

def display_tasks(tasks):
    print("\n📋 Your To-Do List:")
    if not tasks:
        print("No tasks yet!")
    else:
        for i, task in enumerate(tasks, start=1):
            print(f"{i}. {task}")

def main():
    tasks = load_tasks()

    while True:
        print("\n--- To-Do List Menu ---")
        print("1. View tasks")
        print("2. Add a task")
        print("3. Remove a task")
        print("4. Exit")

        choice = input("Enter your choice (1-4): ")

        if choice == "1":
            display_tasks(tasks)
        elif choice == "2":
            task = input("Enter the new task: ")
            tasks.append(task)
            save_tasks(tasks)
            print("✅ Task added.")
        elif choice == "3":
            display_tasks(tasks)
            try:
                index = int(input("Enter the task number to remove: ")) - 1
                if 0 <= index < len(tasks):
                    removed = tasks.pop(index)
                    save_tasks(tasks)
                    print(f"❌ Removed: {removed}")
                else:
                    print("Invalid number.")
            except ValueError:
                print("Please enter a valid number.")
        elif choice == "4":
            print("👋 Goodbye!")
            break
        else:
            print("Invalid choice. Please try again.")

if __name__ == "__main__":
    main()

🧪 How It Works:

The app reads from and writes to a file named tasks.txt.
Tasks are stored line by line, and the app keeps them updated.
The menu lets users view, add, or remove tasks.

💾 Why File Storage Matters

Most beginners make to-do lists that only work until the script ends.
But with file storage, your data persists — just like a real app.

📌 Every time you add or remove a task, it updates the tasks.txt file!

🚀 Bonus: Ideas to Upgrade This App

✅ Mark tasks as completed
🗃️ Add categories or deadlines
💻 Build a GUI version using Tkinter
🌐 Convert it into a web app using Flask

✅ Conclusion

This project is a fantastic way to practice:

Python basics
File handling
Loops & functions
User input handling

The best part? It’s useful in real life!

💬 Want a GUI version or an advanced to-do list with priorities? Drop your comment below, and I’ll help you build it!