{"blog_title":"\u521d\u5fc3\u8005\u306e\u305f\u3081\u306epython\u5165\u9580","author_name":"tiginkgo","height":"190","url":"https://tiginkgo.hateblo.jp/entry/20190714/1563086052","blog_url":"https://tiginkgo.hateblo.jp/","version":"1.0","published":"2019-07-14 15:34:12","categories":[],"type":"rich","width":"100%","author_url":"https://blog.hatena.ne.jp/tiginkgo/","image_url":"https://thumbnail.image.rakuten.co.jp/@0_mall/book/cabinet/7386/9784873117386.jpg?_ex=128x128","title":"collections[2]","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftiginkgo.hateblo.jp%2Fentry%2F20190714%2F1563086052\" title=\"collections[2] - \u521d\u5fc3\u8005\u306e\u305f\u3081\u306epython\u5165\u9580\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"\u524d\u66f8\u304d \u524d\u56de\u306b\u7d9a\u304d\u3001collections\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u307e\u3059\u3002 Counter Counter\u306f\u3001\u30ea\u30b9\u30c8\u3084\u30bf\u30d7\u30eb\u306a\u3069\u306e\u30cf\u30c3\u30b7\u30e5\u53ef\u80fd\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089\u5024\u306e\u51fa\u73fe\u56de\u6570\u3092\u6570\u3048\u4e0a\u3052\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u8f9e\u66f8\u306e\u30b5\u30d6\u30af\u30e9\u30b9\u3067\u3059\u3002 from collections import Counter l = [1 if i % 2 else 0 for i in range(10)] # \u30ea\u30b9\u30c8\u5185\u5305\u8868\u8a18 c = Counter(l) print(c) print(c[0]) Counter({0: 5, 1: 5}) # print(c) 5 # print(c[0]) \u4fbf\u5229\u306a\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u3066\u4ee5\u4e0b\u306e\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002\u2026","provider_url":"https://hatena.blog"}