I’m doing the python mega course on udemy, and I get an error

I get an error even though i did exactly what the instructor did. It is supposed to show all your todo items when you type “show” but it gives an error. Here’s the code:

new_todos = []

        for item in todos:
            new_item = item.strip('n')
            new_todos.append(new_item)
    case 'show' | 'display':
        file = open('../todos.txt', 'r')
        todos = file.readlines()
        for index, item in enumerate(new_todos):
            item = item.title()
            row = f"{index + 1}-{item}"
            print(row)

And here’s the error:

Traceback (most recent call last):
File “C:Python Programing – ArditPython Programs 2024app1pythonProjectfilesmain.py”, line 28, in
for index, item in enumerate(new_todos):
^^^^^^^^^
NameError: name ‘new_todos’ is not defined

It says that “new_todos” isnt defined, but looking at the code it is. Please help