{"id":926,"date":"2010-12-05T14:46:18","date_gmt":"2010-12-05T05:46:18","guid":{"rendered":"http:\/\/peta.okechan.net\/blog\/?p=926"},"modified":"2010-12-05T18:18:35","modified_gmt":"2010-12-05T09:18:35","slug":"1%e8%a1%8c%e3%81%a7%e8%be%9e%e6%9b%b8%e3%81%ae%e5%80%a4%e3%82%92%e3%82%a4%e3%83%b3%e3%82%af%e3%83%aa%e3%83%a1%e3%83%b3%e3%83%88%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/peta.okechan.net\/blog\/archives\/926","title":{"rendered":"1\u884c\u3067\u8f9e\u66f8\u306e\u5024\u3092\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u3059\u308b"},"content":{"rendered":"

Python\u306e\u7d44\u307f\u8fbc\u307fdict\u3067\u306f\u5b58\u5728\u3057\u306a\u3044\u30ad\u30fc\u3067\u5024\u3092\u53d6\u308a\u51fa\u305d\u3046\u3068\u3059\u308b\u3068KeyError\u304c\u767a\u751f\u3059\u308b\u306e\u3067\u3001\u4f8b\u3048\u3070\u30ad\u30fc\u3067\u6307\u5b9a\u3057\u305f\u5024\u3092\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u3059\u308b\u51e6\u7406\u306a\u3093\u304b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u304a\u6c7a\u307e\u308a\u306e\u30d1\u30bf\u30fc\u30f3\u3067\u66f8\u304f\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n

\r\nd = {}\r\nif k in d:\r\n    d[k] += 1\r\nelse:\r\n    d[k]  = 1\r\n<\/pre>\n
\u3067\u3082\u30011\u884c\u3067\u66f8\u304d\u305f\u3051\u308c\u3070\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u66f8\u3051\u307e\u3059\u3002<\/p>\n
\r\nd = {}\r\nd[k] = d.get(k, 0) + 1\r\n<\/pre>\n
defaultdict\uff08v2.5\u304b\u3089\u6a19\u6e96\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u306a\u3063\u3066\u308b\uff09\u3092\u4f7f\u3046\u3068\u6b21\u306e\u3088\u3046\u306b\u3082\u66f8\u3051\u307e\u3059\u3002
\n\uff08\u3061\u306a\u307f\u306bget\u3092\u4f7f\u3046\u65b9\u6cd5\u3088\u308adefaultdict\u3092\u4f7f\u3046\u307b\u3046\u304c\u901f\u3044\u305d\u3046\u3067\u3059\uff09<\/p>\n
\r\nfrom collections import defaultdict\r\nd = defaultdict(int)\r\nd[k] += 1\r\n<\/pre>\n
defaultdict\u306b\u6e21\u3059\u5f15\u6570\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8fd4\u3059callable object\u3067\u3059\u3002
\n\uff08int()\u3092\u5b9f\u884c\u3059\u308b\u3068int\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3067\u3042\u308b0\u304c\u5f97\u3089\u308c\u308b\uff09
\n\u30aa\u30d5\u30a3\u30b7\u30e3\u30eb\u306e\u30b5\u30f3\u30d7\u30eb\u306b\u3082\u4e0a\u8a18\u306e\u3088\u3046\u306bdefaultdict\u306bint\u3092\u6e21\u3059\u66f8\u304d\u65b9\u304c\u8f09\u3063\u3066\u307e\u3059\u304c\u3001\u500b\u4eba\u7684\u306b\u5fae\u5999\u306a\u611f\u3058\u304c\u3059\u308b\uff08\u77e5\u3089\u306a\u3044\u4eba\u304c\u898b\u305f\u3089\u8f9e\u66f8\u306e\u5024\u3092int\u578b\u306b\u9650\u5b9a\u3057\u3066\u308b\u306e\u304b\uff1f\u3068\u52d8\u9055\u3044\u3059\u308b\u304b\u3082\u3057\u308c\u306a\u3044\uff09\u306e\u3067\u3061\u3087\u3063\u3068\u5909\u3048\u3066\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u66f8\u3044\u3066\u307e\u3059\u3002<\/p>\n
\r\nfrom collections import defaultdict\r\nd = defaultdict(lambda: 0)\r\nd[k] += 1\r\n<\/pre>\n
\u3053\u308c\u3060\u3068\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u30921\u3068\u304b\u3082\u3063\u3068\u4ed6\u306e\u6570\u5b57\u306b\u5909\u3048\u305f\u3044\u3068\u304d\u3084\u3001\u3082\u3063\u3068\u5947\u5999\u306a\u6587\u5b57\u5217\u306b\u3057\u305f\u3044\u3068\u304d\u3082\u540c\u3058\u66f8\u304d\u65b9\u3067\u5bfe\u5fdc\u3067\u304d\u308b\u306e\u3067\u3088\u308a\u4e00\u822c\u7684\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
\u3061\u306a\u307f\u306bdefaultdict\u3067\u306f\u3001\u5b58\u5728\u3057\u306a\u3044\u30ad\u30fc\u3092\u6307\u5b9a\u3057\u3066\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8fd4\u3059\u969b\u306b\u305d\u306e\u30ad\u30fc\u3068\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3067\u65b0\u305f\u306b\u30c7\u30fc\u30bf\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3059\u3002
\n\u3053\u308c\u304c\u6587\u8108\u306b\u3088\u3063\u3066\u306f\u597d\u307e\u3057\u304f\u306a\u3044\u526f\u4f5c\u7528\u3068\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3054\u6ce8\u610f\u3092\u3002\u4e0b\u8a18\u53c2\u7167\u3002
\n\uff08\u30ad\u30fc\u304c\u5b58\u5728\u3059\u308b\u304b\u3057\u306a\u3044\u304b\u3060\u3051\u30c1\u30a7\u30c3\u30af\u3067\u304d\u308c\u3070\u3044\u3044\u306e\u306b\u7121\u99c4\u306b\u30e1\u30e2\u30ea\u3092\u98df\u3046\u3068\u304b\u30ad\u30fc\u304c\u5b58\u5728\u3057\u306a\u3044\u3068\u3044\u3046\u60c5\u5831\u3092\u5931\u3046\u3068\u304b\uff09<\/p>\n
\r\n# defaultdict\u306e\u30de\u30ba\u30a4\u4f7f\u3044\u65b9\r\nfrom collections import defaultdict\r\ndd = defaultdict(lambda: '*', {'a': 'aa', 'b': 'bb', 'c': 'cc'})\r\nprint dd\r\n# defaultdict(<function <lambda> at 0x100510668>, {'a': 'aa', 'c': 'cc', 'b': 'bb'})\r\n\r\nfor code in xrange(ord('a'), ord('z') + 1):\r\n    if dd[chr(code)] != "*":\r\n        pass # \u4f55\u3089\u304b\u306e\u51e6\u7406\r\n\r\nprint dd\r\n# defaultdict(<function <lambda> at 0x100510668>, {'a': 'aa', 'c': 'cc', 'b': 'bb', 'e': '*', 'd': '*', 'g': '*', 'f': '*', 'i': '*', 'h': '*', 'k': '*', 'j': '*', 'm': '*', 'l': '*', 'o': '*', 'n': '*', 'q': '*', 'p': '*', 's': '*', 'r': '*', 'u': '*', 't': '*', 'w': '*', 'v': '*', 'y': '*', 'x': '*', 'z': '*'})\r\n<\/pre>\n
\r\n# in\u3067\u30ad\u30fc\u306e\u5b58\u5728\u30c1\u30a7\u30c3\u30af\u3092\u3059\u308b\u3068\u56de\u907f\u3067\u304d\u308b\r\nfrom collections import defaultdict\r\ndd = defaultdict(lambda: '*', {'a': 'aa', 'b': 'bb', 'c': 'cc'})\r\nprint dd\r\n# defaultdict(<function <lambda> at 0x100510668>, {'a': 'aa', 'c': 'cc', 'b': 'bb'})\r\n\r\nfor code in xrange(ord('a'), ord('z') + 1):\r\n    if chr(code) in dd:\r\n        pass # \u4f55\u3089\u304b\u306e\u51e6\u7406\r\n\r\nprint dd\r\n# defaultdict(<function <lambda> at 0x100510668>, {'a': 'aa', 'c': 'cc', 'b': 'bb'})\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
Python\u306e\u7d44\u307f\u8fbc\u307fdict\u3067\u306f\u5b58\u5728\u3057\u306a\u3044\u30ad\u30fc\u3067\u5024\u3092\u53d6\u308a\u51fa\u305d\u3046\u3068\u3059\u308b\u3068KeyError\u304c\u767a\u751f\u3059\u308b\u306e\u3067\u3001\u4f8b\u3048\u3070\u30ad\u30fc\u3067\u6307\u5b9a\u3057\u305f\u5024\u3092\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u3059\u308b\u51e6\u7406\u306a\u3093\u304b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u304a\u6c7a\u307e\u308a\u306e\u30d1\u30bf\u30fc\u30f3\u3067\u66f8\u304f\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n
\r\nd = {}\r\nif k in d:\r\n    d[k] += 1\r\nelse:\r\n    d[k]  = 1\r\n<\/pre>\n
\u3067\u3082\u30011\u884c\u3067\u66f8\u304d\u305f\u3051\u308c\u3070\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u66f8\u3051\u307e\u3059\u3002<\/p>\n
\r\nd = {}\r\nd[k] = d.get(k, 0) + 1\r\n<\/pre>\n
defaultdict\uff08v2.5\u304b\u3089\u6a19\u6e96\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u306a\u3063\u3066\u308b\uff09\u3092\u4f7f\u3046\u3068\u6b21\u306e\u3088\u3046\u306b\u3082\u66f8\u3051\u307e\u3059\u3002
\n\uff08\u3061\u306a\u307f\u306bget\u3092\u4f7f\u3046\u65b9\u6cd5\u3088\u308adefaultdict\u3092\u4f7f\u3046\u307b\u3046\u304c\u901f\u3044\u305d\u3046\u3067\u3059\uff09<\/p>\n
\r\nfrom collections import defaultdict\r\nd = defaultdict(int)\r\nd[k] += 1\r\n<\/pre>\n
defaultdict\u306b\u6e21\u3059\u5f15\u6570\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8fd4\u3059callable object\u3067\u3059\u3002
\n\uff08int()\u3092\u5b9f\u884c\u3059\u308b\u3068int\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3067\u3042\u308b0\u304c\u5f97\u3089\u308c\u308b\uff09
\n\u30aa\u30d5\u30a3\u30b7\u30e3\u30eb\u306e\u30b5\u30f3\u30d7\u30eb\u306b\u3082\u4e0a\u8a18\u306e\u3088\u3046\u306bdefaultdict\u306bint\u3092\u6e21\u3059\u66f8\u304d\u65b9\u304c\u8f09\u3063\u3066\u307e\u3059\u304c\u3001\u500b\u4eba\u7684\u306b\u5fae\u5999\u306a\u611f\u3058\u304c\u3059\u308b\uff08\u77e5\u3089\u306a\u3044\u4eba\u304c\u898b\u305f\u3089\u8f9e\u66f8\u306e\u5024\u3092int\u578b\u306b\u9650\u5b9a\u3057\u3066\u308b\u306e\u304b\uff1f\u3068\u52d8\u9055\u3044\u3059\u308b\u304b\u3082\u3057\u308c\u306a\u3044\uff09\u306e\u3067\u3061\u3087\u3063\u3068\u5909\u3048\u3066\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u66f8\u3044\u3066\u307e\u3059\u3002<\/p>\n
\r\nfrom collections import defaultdict\r\nd = defaultdict(lambda: 0)\r\nd[k] += 1\r\n<\/pre>\n
\u3053\u308c\u3060\u3068\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u30921\u3068\u304b\u3082\u3063\u3068\u4ed6\u306e\u6570\u5b57\u306b\u5909\u3048\u305f\u3044\u3068\u304d\u3084\u3001\u3082\u3063\u3068\u5947\u5999\u306a\u6587\u5b57\u5217\u306b\u3057\u305f\u3044\u3068\u304d\u3082\u540c\u3058\u66f8\u304d\u65b9\u3067\u5bfe\u5fdc\u3067\u304d\u308b\u306e\u3067\u3088\u308a\u4e00\u822c\u7684\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
\u3061\u306a\u307f\u306bdefaultdict\u3067\u306f\u3001\u5b58\u5728\u3057\u306a\u3044\u30ad\u30fc\u3092\u6307\u5b9a\u3057\u3066\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8fd4\u3059\u969b\u306b\u305d\u306e\u30ad\u30fc\u3068\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3067\u65b0\u305f\u306b\u30c7\u30fc\u30bf\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3059\u3002
\n\u3053\u308c\u304c\u6587\u8108\u306b\u3088\u3063\u3066\u306f\u597d\u307e\u3057\u304f\u306a\u3044\u526f\u4f5c\u7528\u3068\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3054\u6ce8\u610f\u3092\u3002\u4e0b\u8a18\u53c2\u7167\u3002
\n\uff08\u30ad\u30fc\u304c\u5b58\u5728\u3059\u308b\u304b\u3057\u306a\u3044\u304b\u3060\u3051\u30c1\u30a7\u30c3\u30af\u3067\u304d\u308c\u3070\u3044\u3044\u306e\u306b\u7121\u99c4\u306b\u30e1\u30e2\u30ea\u3092\u98df\u3046\u3068\u304b\u30ad\u30fc\u304c\u5b58\u5728\u3057\u306a\u3044\u3068\u3044\u3046\u60c5\u5831\u3092\u5931\u3046\u3068\u304b\uff09<\/p>\n
\r\n# defaultdict\u306e\u30de\u30ba\u30a4\u4f7f\u3044\u65b9\r\nfrom collections import defaultdict\r\ndd = defaultdict(lambda: '*', {'a': 'aa', 'b': 'bb', 'c': 'cc'})\r\nprint dd\r\n# defaultdict(<function <lambda> at 0x100510668>, {'a': 'aa', 'c': 'cc', 'b': 'bb'})\r\n\r\nfor code in xrange(ord('a'), ord('z') + 1):\r\n    if dd[chr(code)] != "*":\r\n        pass # \u4f55\u3089\u304b\u306e\u51e6\u7406\r\n\r\nprint dd\r\n# defaultdict(<function <lambda> at 0x100510668>, {'a': 'aa', 'c': 'cc', 'b': 'bb', 'e': '*', 'd': '*', 'g': '*', 'f': '*', 'i': '*', 'h': '*', 'k': '*', 'j': '*', 'm': '*', 'l': '*', 'o': '*', 'n': '*', 'q': '*', 'p': '*', 's': '*', 'r': '*', 'u': '*', 't': '*', 'w': '*', 'v': '*', 'y': '*', 'x': '*', 'z': '*'})\r\n<\/pre>\n
\r\n# in\u3067\u30ad\u30fc\u306e\u5b58\u5728\u30c1\u30a7\u30c3\u30af\u3092\u3059\u308b\u3068\u56de\u907f\u3067\u304d\u308b\r\nfrom collections import defaultdict\r\ndd = defaultdict(lambda: '*', {'a': 'aa', 'b': 'bb', 'c': 'cc'})\r\nprint dd\r\n# defaultdict(<function <lambda> at 0x100510668>, {'a': 'aa', 'c': 'cc', 'b': 'bb'})\r\n\r\nfor code in xrange(ord('a'), ord('z') + 1):\r\n    if chr(code) in dd:\r\n        pass # \u4f55\u3089\u304b\u306e\u51e6\u7406\r\n\r\nprint dd\r\n# defaultdict(<function <lambda> at 0x100510668>, {'a': 'aa', 'c': 'cc', 'b': 'bb'})\r\n<\/pre>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[60],"class_list":["post-926","post","type-post","status-publish","format-standard","hentry","category-tech","tag-python"],"_links":{"self":[{"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/posts\/926","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/comments?post=926"}],"version-history":[{"count":0,"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/posts\/926\/revisions"}],"wp:attachment":[{"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/media?parent=926"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/categories?post=926"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/tags?post=926"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}