citynames.py

capitals = {"London", "New York", "Kuala-Lumpur", "Den Haag", "Bern", "Peking"}

for city in capitals:
    if city.find(' ') > 0:
        print(f"This city's name is comprised of more than one word: {city}")
    elif city.find('-') > 0:
        print(f"This city's name is comprised of more than one word: {city}")
    else:
        print(f"This city's name is just one word: {city}")