Todo_list={ "1":"study maths", "2":"head the gym" } completed_tasks={

} def add_task(): print("Enter the task:") x=input() Todo_list.update({"3":x}) print(f"Your to-do list:{Todo_list}") print(f"Your completed tasks:{completed_tasks}")

def view_tasks(): print(f"Your to-do list:{Todo_list}") print(f"Your completed tasks:{completed_tasks}")

def mark_task(): print("Enter the completed task:") x=input() if x in Todo_list: completed_tasks.update({"1":x}) del Todo_list[x] print(f"YOU HAVE COMPLETED THIS TASK:{x}") print(f"Your to-do list:{Todo_list}") print(f"Your completed tasks:{completed_tasks}") else: print("Can't find this task")

def delete_task(): x=input("Enter task number") if x in Todo_list: del Todo_list[x] print(f"Your to-do list:{Todo_list}") print(f"Your completed tasks:{completed_tasks}") else: print("Task not found")

print("Enter action (add/delete/mark/view)") x=input() if x == "add": add_task() elif x == "delete": delete_task() elif x == "mark": mark_task() elif x == "view": view_tasks() else: print("Invalid action. Please try again")