#** I am trying to get my existing todos saved in my txt file by using the case show given in my following code:`**

while True:
    user_action = input("Type add, show:")
    user_action = user_action.strip()
    match user_action:
        case 'add':
            todo = input("Enter any todo:") + "n"

            file = open('todos.txt', 'r')
            todos = file.readlines()
            file.close()

            todos.append(todo)

            file = open('todos.txt', 'w')
            file.writelines(todos)
            file.close()
        case 'show' | 'display':
            for index, item in enumerate(todos):
            print(f"{index + 1}. {item}")

I had already saved my existing ‘todos’ in my txt file but after running the code and using the command ‘show’, my IDE gives the following error:

Traceback (most recent call last):
File "c:\Ayan\coding\paid course.vscode\udemy.py", line 20, in <module>
for index, item in enumerate(todos):
^^^^^
NameError: name 'todos' is not defined