# Считаем количество букв в названиях городов
with open('cities.txt', 'r', encoding='utf-8') as f:
    cities = f.readlines()

with open('result.txt', 'w', encoding='utf-8') as f:
    for city in cities:
        city = city.strip()
        if city:
            f.write(f"{city} -> {len(city)} букв\n")

print("Готово! Смотри result.txt")