todo.py

tasks=[]
def add_task(task):
    '''Add a task to to-do list'''
    tasks.append(task)
    print(f"Added task:{task}")
def remove_task(task):
    '''Remove a task from to-do list'''
    if task in tasks:
        tasks.remove(task)
        print(f"Remove task:{task}")
    else:
        print(f"{task}not found")
def view_task():
    '''View all task in list'''
    print("To-do list:")
    for i, task in enumerate(tasks):
        print(f"{i+1}.{task}")
#Main program loop
while True:
  print("\nwhat you want to do")
  print("1. Add a task")
  print("2. Remove a task")
  print("3. View all task")
  print("4. Exit")
  choice= input("Enter choice:")
  if choice=="1":
     task=input("Enter a new task")
     add_task(task)
  elif choice=="2":
     task=input("Enter task to remove")
     remove_task(task)
  elif choice=="3":
     task=input("View all task")
     view_task()
  elif choice=="4":
     print("Exiting")
     break
  else:
     print("Invalid choice")