{"author_name":"nishiohirokazu","provider_url":"https://hatena.blog","url":"https://nishiohirokazu.hatenadiary.org/entry/20091214/1260774215","author_url":"https://blog.hatena.ne.jp/nishiohirokazu/","type":"rich","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnishiohirokazu.hatenadiary.org%2Fentry%2F20091214%2F1260774215\" title=\"Python\u30672\u3064\u306e\u6587\u5b57\u5217\u304ca == b\u3060\u3051\u3069\u3082not(a is b)\u3067\u3042\u308b\u3088\u3046\u306a\u30b1\u30fc\u30b9 - \u897f\u5c3e\u6cf0\u548c\u306e\u306f\u3066\u306a\u30c0\u30a4\u30a2\u30ea\u30fc\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":[],"blog_title":"\u897f\u5c3e\u6cf0\u548c\u306e\u306f\u3066\u306a\u30c0\u30a4\u30a2\u30ea\u30fc","provider_name":"Hatena Blog","description":"\u6587\u5b57\u5217\u306e\u6bd4\u8f03\u3067\u7591\u554f\u304b\u3089\u5f15\u7528: d1 = 'a a' d2 = 'a a'id(d1) # => 27605856 id(d2) # => 27606080\u3048\u3063\u306a\u3093\u3067\uff1f \u6587\u5b57\u5217\u306f\u5909\u66f4\u4e0d\u53ef\u80fd\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306a\u306e\u3067\u666e\u901a\u306fis\u3058\u3083\u306a\u304f\u3066==\u3067\u6bd4\u8f03\u3092\u3059\u308b\u3093\u3060\u3051\u3069\u306d\u3002\u7a7a\u767d\u3067\u533a\u5207\u3089\u308c\u305f\u540c\u4e00\u5185\u5bb9\u306e\u6587\u5b57\u5217\u30922\u3064\u3001\u5bfe\u8a71\u7684\u74b0\u5883\u3067\u500b\u5225\u306b\u4f5c\u6210\u3057\u3066\u304b\u3089is\u3067\u6bd4\u8f03\u3059\u308b\u3068False\u306b\u306a\u308b\u3088\u3046\u3060\u3002 Python 2.6.1 (r261:67515, Jan 25 2009, 00:21:48) [GCC 4.0.1 (Apple Inc. build 5490)] on darwin >>> a = \"a a\" >>> b = \u2026","blog_url":"https://nishiohirokazu.hatenadiary.org/","published":"2009-12-14 16:03:35","title":"Python\u30672\u3064\u306e\u6587\u5b57\u5217\u304ca == b\u3060\u3051\u3069\u3082not(a is b)\u3067\u3042\u308b\u3088\u3046\u306a\u30b1\u30fc\u30b9","image_url":null,"height":"190","version":"1.0"}