todo.py

FILENAME = "tasks.txt"

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

def save_tasks(tasks):
    with open(FILENAME, "w") as f:
        for task in tasks:
            f.write(task + "\n")
def add_task(tasks):
    task = input("Enter new task: ").strip()
    if task:
        tasks.append(task)
        save_tasks(tasks)
        print(f"Task '{task}' added!")
    else:
        print("Task cannot be empty.")
def view_tasks(tasks):
    if not tasks:
        print("No tasks found.")
    else:
        print("\nYour Tasks:")
        for i, task in enumerate(tasks, 1):
            print(f"{i}. {task}")
    print()

def remove_task(tasks):
    view_tasks(tasks)
    if not tasks:
        return
    try:
        num = int(input("Enter task number to remove: "))
        if 1 <= num <= len(tasks):
            removed = tasks.pop(num - 1)
            save_tasks(tasks)
            print(f"Removed '{removed}'.")
        else:
            print("Invalid task number.")
    except ValueError:
        print("Please enter a valid number.")

def main():
    tasks = load_tasks()
    while True:
        print("\n--- To-Do List Menu ---")
        print("1. View Tasks")
        print("2. Add Task")
        print("3. Remove Task")
        print("4. Exit")

        choice = input("Choose an option: ").strip()

        if choice == "1":
            view_tasks(tasks)
        elif choice == "2":
            add_task(tasks)
        elif choice == "3":
            remove_task(tasks)
        elif choice == "4":
            print("Goodbye!")
            break
        else:
            print("Invalid option, try again.")

if __name__ == "__main__":
    main()