Task_1_To_Do_List.py

# this is a to_do list written in python

class Task:
    def __init__(self, description, completed=False):
        self.description = description
        self.completed = completed

class TodoList:
    def __init__(self):
        self.tasks = []

    def add_task(self, description):
        task = Task(description)
        self.tasks.append(task)

    def update_task_status(self, task_index, completed=True):
        if 0 <= task_index < len(self.tasks):
            self.tasks[task_index].completed = completed
        else:
            print("Invalid task index.")

    def display_tasks(self):
        if not self.tasks:
            print("No tasks in the list.")
        else:
            print("Task List:")
            for i, task in enumerate(self.tasks):
                status = "✓" if task.completed else "✗"
                print(f"{i + 1}. [{status}] {task.description}")

def main():
    todo_list = TodoList()

    while True:
        print("\nMenu:")
        print("1. Add Task")
        print("2. Mark Task as Completed")
        print("3. Display Tasks")
        print("4. Exit")

        choice = input("Enter your choice: ")

        if choice == "1":
            description = input("Enter task description: ")
            todo_list.add_task(description)
        elif choice == "2":
            task_index = int(input("Enter task number to mark as completed: ")) - 1
            todo_list.update_task_status(task_index)
        elif choice == "3":
            todo_list.display_tasks()
        elif choice == "4":
            print("Exiting...")
            break
        else:
            print("Invalid choice. Please try again.")

if __name__ == "__main__":
    main()