AttributeError: 'function' object has no attribute error [closed]

Answer 1

Local variables in a function are not visible as attributes on that function. For a nested scope, just use the name directly:

def add():
    def addFilm():
        db = open(r"C:\Users\PC\Desktop\db.txt", "a+")
        global film
        film = enter.get()
        db.write(film + "\n")
        db.flush()
        db.close()

Here enter will be attached to addFilm() as a closure, and Python will attach the parent scope enter to the function for later dereferencing. You do need to store the returned value; I guessed that you wanted to assign it to film here.