{"categories":["Python"],"provider_url":"https://hatena.blog","version":"1.0","blog_title":"likr\u2019s labo","height":"190","url":"https://likr.hatenadiary.org/entry/20101106/1289018790","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Flikr.hatenadiary.org%2Fentry%2F20101106%2F1289018790\" title=\"\u5e73\u65b9\u6570\u306e\u7121\u9650\u30ea\u30b9\u30c8\uff08\u3063\u307d\u3044\u3082\u306e\uff09\u3092\u4f5c\u308b - likr\u2019s labo\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"itertools\u30e2\u30b8\u30e5\u30fc\u30eb\u306ecount\u3092\u4f7f\u3048\u3070\u6574\u6570\u3092\u7121\u9650\u306b\u751f\u6210\u3067\u304d\u308b\u3002count\u3092\u4f7f\u3063\u3066\u4f8b\u3048\u3070\u5e73\u65b9\u6570\u3092\u7121\u9650\u306b\u751f\u6210\u3057\u3088\u3046\u3068\u3059\u308b\u3002\u30d3\u30eb\u30c8\u30a4\u30f3\u306emap\u306f\u6709\u9650\u306e\u30b7\u30fc\u30b1\u30f3\u30b9\u306b\u5bfe\u3057\u3066\u306e\u307f\u52d5\u4f5c\u3059\u308b\u306e\u3067\u3001\u8981\u7d20\u6570\u306b\u9650\u308a\u304c\u306a\u3044count\u306b\u9069\u7528\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u3002\u3053\u306e\u3088\u3046\u306a\u5834\u5408\u306b\u306fitertools\u306e\u4ed6\u306e\u95a2\u6570\u304c\u5f79\u306b\u7acb\u3064\u3002 import itertools squares = itertools.imap(lambda x:x*x, itertools.count(1)) # \u4f7f\u7528\u4f8b\uff1a10000\u4ee5\u4e0b\u306e\u5e73\u65b9\u6570\u306e\u30ea\u30b9\u30c8\u3092\u4f5c\u308b print list(itertools.takewhile(lambda n:n<10000\u2026","image_url":null,"width":"100%","author_name":"likr","title":"\u5e73\u65b9\u6570\u306e\u7121\u9650\u30ea\u30b9\u30c8\uff08\u3063\u307d\u3044\u3082\u306e\uff09\u3092\u4f5c\u308b","type":"rich","provider_name":"Hatena Blog","blog_url":"https://likr.hatenadiary.org/","author_url":"https://blog.hatena.ne.jp/likr/","published":"2010-11-06 13:46:30"}