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PytStart | Программирование на Python

24 Aug, 18:16

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👩‍💻 Как работает collections.Counter?

Counter — это удобный инструмент для подсчета элементов в коллекции.
Не обязательно писать цикл и вручную считать каждый элемент 👇

➡️ Пример:


from collections import Counter

data = "aabbbcccc"
counter = Counter(data)
print(counter) # Counter({'c': 4, 'b': 3, 'a': 2})

✔️ Можно использовать для нахождения самых частых элементов:


print(counter.most_common(2)) # [('c', 4), ('b', 3)]

⚙️ Также работает со списками:


words = ["apple", "banana", "apple", "orange", "banana", "banana"]
print(Counter(words)) # {'banana': 3, 'apple': 2, 'orange': 1}

🔥 Counter особенно полезен для:
— анализа текста
— подсчёта слов
— статистики
— обработки данных

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