Now that Python 3.7 reached end-of-life, and since Python 3.8 and greater have support for positional-only argument notation (any argument before a `/` delimiter may only be passed positionally), ...

Next, we see the app.py file import the helper module and then ... If it is, it calls the greet() function with the name "Alice". If this script were imported as a module in another Python script, the ...