{"image_url":null,"categories":["\u6570\u5b66","Python"],"provider_name":"Hatena Blog","author_name":"inamori","url":"https://inamori.hateblo.jp/entry/20090422/p2","type":"rich","blog_url":"https://inamori.hateblo.jp/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Finamori.hateblo.jp%2Fentry%2F20090422%2Fp2\" title=\"Project Euler\uff082\uff09 - inamori\u2019s diary\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"inamori\u2019s diary","height":"190","provider_url":"https://hatena.blog","version":"1.0","description":"\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u30aa\u30a4\u30e9\u30fc http://projecteuler.net/index.php Q2. \u30d5\u30a3\u30dc\u30ca\u30c3\u30c1\u6570\u5217\u306e4000000\u3092\u8d85\u3048\u306a\u3044\u5076\u6570\u9805\u306e\u548c\u3002 from itertools import takewhiledef fib(): a, b = 1, 2 while True: if a & 1 == 0: yield a a, b = b, a + bN = 4000000 print reduce(lambda x, y: x + y, takewhile(lambda x: x \u3053\u3053\u3067\u306e\u30d5\u30a3\u30dc\u30ca\u30c3\u30c1\u6570\u306e\u4e00\u822c\u9805\u306f\u3001 \u03b1 = (1 - \u221a5) / 2 \u03b2 = (1 + \u221a5) / 2 \u2026","published":"2009-04-22 00:00:01","author_url":"https://blog.hatena.ne.jp/inamori/","title":"Project Euler\uff082\uff09","width":"100%"}