def make_pretty(func):
    # define the inner function 
    def inner():
        # add some additional behavior to decorated function
        print("Dies ist die innere Funktion.")

        # call original function
        func()
    # return the inner function
    return inner

# define ordinary function
def ordinary():
    print("Dies ist die ordinary() Funktion.")
    
# decorate the ordinary function
decorated_func = make_pretty(ordinary)

# call the decorated function
decorated_func()