TO-DO Program

import os

# Function to load tasks from a file
def load_tasks(file_name):
    tasks = []
    if os.path.exists(file_name):
        with open(file_name, 'r') as file:
            tasks = file.read().splitlines()
    return tasks

# Function to save tasks to a file
def save_tasks(file_name, tasks):
    with open(file_name, 'w') as file:
        for task in tasks:
            file.write(task + '\n')

# Function to display tasks
def display_tasks(tasks):
    if not tasks:
        print("No tasks found.")
    else:
        print("Your To-Do List:")
        for i, task in enumerate(tasks, start=1):
            print(f"{i}. {task}")

# Function to add a new task
def add_task(tasks):
    task = input("Enter a new task: ")
    tasks.append(task)
    print(f"Task '{task}' added.")

# Function to delete a task
def delete_task(tasks):
    display_tasks(tasks)
    task_number = int(input("Enter the task number to delete: "))
    if 1 <= task_number <= len(tasks):
        removed_task = tasks.pop(task_number - 1)
        print(f"Task '{removed_task}' deleted.")
    else:
        print("Invalid task number.")

# Main function
def main():
    file_name = 'tasks.txt'
    tasks = load_tasks(file_name)

    while True:
        print("\nTo-Do List Application")
        print("1. View Tasks")
        print("2. Add Task")
        print("3. Delete Task")
        print("4. Exit")
        choice = input("Choose an option: ")

        if choice == '1':
            display_tasks(tasks)
        elif choice == '2':
            add_task(tasks)
            save_tasks(file_name, tasks)
        elif choice == '3':
            delete_task(tasks)
            save_tasks(file_name, tasks)
        elif choice == '4':
            print("Exiting the application.")
            break
        else:
            print("Invalid choice. Please choose again.")

if __name__ == "__main__":
    main()