Persistent To-Do List Manager Script

import json
import os

def load_tasks(filename):
    if os.path.exists(filename):
        with open(filename, 'r') as file:
            return json.load(file)
    return []

def save_tasks(tasks, filename):
    with open(filename, 'w') as file:
        json.dump(tasks, file)

def display_tasks(tasks):
    if not tasks:
        print("Your to-do list is empty.")
    else:
        print("Your To-Do List:")
        for index, task in enumerate(tasks, start=1):
            print(f"{index}. {task}")

def main():
    filename = 'tasks.json'
    tasks = load_tasks(filename)

    while True:
        print("\nOptions:")
        print("1. Add task")
        print("2. Remove task")
        print("3. View tasks")
        print("4. Exit")
        
        choice = input("Select an option (1-4): ")
        
        if choice == '1':
            task = input("Enter the task: ")
            tasks.append(task)
            save_tasks(tasks, filename)
            print(f"Task '{task}' added.")
        elif choice == '2':
            display_tasks(tasks)
            try:
                task_index = int(input("Enter the task number to remove: ")) - 1
                if 0 <= task_index < len(tasks):
                    removed_task = tasks.pop(task_index)
                    save_tasks(tasks, filename)
                    print(f"Task '{removed_task}' removed.")
                else:
                    print("Invalid task number.")
            except ValueError:
                print("Please enter a valid number.")
        elif choice == '3':
            display_tasks(tasks)
        elif choice == '4':
            print("Exiting the To-Do List Manager.")
            break
        else:
            print("Invalid option. Please try again.")

if __name__ == "__main__":
    main()