{"id":2349,"date":"2023-07-22T15:53:14","date_gmt":"2023-07-22T15:53:14","guid":{"rendered":"https:\/\/statorials.org\/ja\/pandas-groupby-%e3%82%ab%e3%82%a6%e3%83%b3%e3%83%88%e3%81%af%e4%b8%80%e6%84%8f%e3%81%a6%e3%82%99%e3%81%99\/"},"modified":"2023-07-22T15:53:14","modified_gmt":"2023-07-22T15:53:14","slug":"pandas-groupby-%e3%82%ab%e3%82%a6%e3%83%b3%e3%83%88%e3%81%af%e4%b8%80%e6%84%8f%e3%81%a6%e3%82%99%e3%81%99","status":"publish","type":"post","link":"https:\/\/statorials.org\/ja\/pandas-groupby-%e3%82%ab%e3%82%a6%e3%83%b3%e3%83%88%e3%81%af%e4%b8%80%e6%84%8f%e3%81%a6%e3%82%99%e3%81%99\/","title":{"rendered":"Pandas groupby \u3092\u4f7f\u7528\u3057\u3066\u4e00\u610f\u306e\u5024\u3092\u30ab\u30a6\u30f3\u30c8\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u6b21\u306e\u57fa\u672c\u69cb\u6587\u3092\u4f7f\u7528\u3057\u3066\u3001pandas DataFrame \u5185\u306e\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306e\u4e00\u610f\u306e\u5024\u306e\u6570\u3092\u30ab\u30a6\u30f3\u30c8\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df. <span style=\"color: #3366ff;\">groupby<\/span> (' <span style=\"color: #ff0000;\">group_column<\/span> ')[' <span style=\"color: #ff0000;\">count_column<\/span> ']. <span style=\"color: #3366ff;\">nunique<\/span> ()\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u6b21\u306e\u4f8b\u306f\u3001\u3053\u306e\u69cb\u6587\u3092\u6b21\u306e DataFrame \u3067\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> pandas <span style=\"color: #008000;\">as<\/span> pd\n\n<span style=\"color: #008080;\">#createDataFrame\n<\/span>df = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">team<\/span> ': ['A', 'A', 'A', 'A', 'A', 'B', 'B', 'B', 'B', 'B'],\n                   ' <span style=\"color: #ff0000;\">position<\/span> ': ['G', 'G', 'G', 'F', 'F', 'G', 'G', 'F', 'F', 'F'],\n                   ' <span style=\"color: #ff0000;\">points<\/span> ': [5, 7, 7, 9, 12, 9, 9, 4, 7, 7],\n                   ' <span style=\"color: #ff0000;\">rebounds<\/span> ': [11, 8, 10, 6, 6, 5, 9, 12, 13, 15]})\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span>df\n\n\tteam position points rebounds\n0 A G 5 11\n1 A G 7 8\n2 A G 7 10\n3 A F 9 6\n4 A F 12 6\n5 B G 9 5\n6 B G 9 9\n7 B F 4 12\n8 B F 7 13\n9 B F 7 15\n<\/strong><\/pre>\n<h3><span style=\"color: #000000;\"><strong>\u4f8b 1: \u5217\u3054\u3068\u306b\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3001\u4e00\u610f\u306e\u5024\u3092\u30ab\u30a6\u30f3\u30c8\u3059\u308b<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u6b21\u306e\u30b3\u30fc\u30c9\u306f\u3001\u5404\u30c1\u30fc\u30e0\u306e\u300c\u30dd\u30a4\u30f3\u30c8\u300d\u5217\u306e\u4e00\u610f\u306e\u5024\u306e\u6570\u3092\u30ab\u30a6\u30f3\u30c8\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#count number of unique values in 'points' column grouped by 'team' column\n<span style=\"color: #000000;\">df. <span style=\"color: #3366ff;\">groupby<\/span> (' <span style=\"color: #ff0000;\">team<\/span> ')[' <span style=\"color: #ff0000;\">points<\/span> ']. <span style=\"color: #3366ff;\">nunique<\/span> ()\n\nteam\nAt 4\nB 3\nName: points, dtype: int64<\/span>\n<\/span><\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u7d50\u679c\u304b\u3089\u6b21\u306e\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">\u30c1\u30fc\u30e0A\u306b\u306f<strong>4\u3064<\/strong>\u306e\u56fa\u6709\u306e\u300c\u30dd\u30a4\u30f3\u30c8\u300d\u5024\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/li>\n<li><span style=\"color: #000000;\">\u30c1\u30fc\u30e0B\u306b\u306f<strong>3\u3064<\/strong>\u306e\u72ec\u81ea\u306e\u300c\u30dd\u30a4\u30f3\u30c8\u300d\u5024\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\"><strong>unique()<\/strong>\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u3001\u30c1\u30fc\u30e0\u3054\u3068\u306b\u4e00\u610f\u306e\u300c\u30dd\u30a4\u30f3\u30c8\u300d\u5024\u3092\u8868\u793a\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#display unique values in 'points' column grouped by 'team'<\/span>\ndf. <span style=\"color: #3366ff;\">groupby<\/span> (' <span style=\"color: #ff0000;\">team<\/span> ')[' <span style=\"color: #ff0000;\">points<\/span> ']. <span style=\"color: #3366ff;\">single<\/span> ()\n\nteam\nA [5, 7, 9, 12]\nB [9, 4, 7]\nName: points, dtype: object<\/span><\/span><\/strong><\/pre>\n<h3><span style=\"color: #000000;\"><strong>\u4f8b 2: \u8907\u6570\u306e\u5217\u3067\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3001\u4e00\u610f\u306e\u5024\u3092\u30ab\u30a6\u30f3\u30c8\u3059\u308b<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u6b21\u306e\u30b3\u30fc\u30c9\u306f\u3001\u30c1\u30fc\u30e0<em>\u3068<\/em>\u30dd\u30b8\u30b7\u30e7\u30f3\u3054\u3068\u306b\u30b0\u30eb\u30fc\u30d7\u5316\u3055\u308c\u305f\u300c\u30dd\u30a4\u30f3\u30c8\u300d\u5217\u306e\u4e00\u610f\u306e\u5024\u306e\u6570\u3092\u30ab\u30a6\u30f3\u30c8\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#count number of unique values in 'points' column grouped by 'team' and 'position'\n<span style=\"color: #000000;\">df. <span style=\"color: #3366ff;\">groupby<\/span> ([' <span style=\"color: #ff0000;\">team<\/span> ', ' <span style=\"color: #ff0000;\">position<\/span> '])[' <span style=\"color: #ff0000;\">points<\/span> ']. <span style=\"color: #3366ff;\">nunique<\/span> ()\n\nteam position\nAF2\n      G2\nBF 2\n      G 1\nName: points, dtype: int64<\/span><\/span><\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u7d50\u679c\u304b\u3089\u6b21\u306e\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">\u30c1\u30fc\u30e0 A \u306e\u30dd\u30b8\u30b7\u30e7\u30f3\u300cF\u300d\u306e\u30d7\u30ec\u30fc\u30e4\u30fc\u306b\u306f<strong>2 \u3064<\/strong>\u306e\u56fa\u6709\u306e\u300c\u30dd\u30a4\u30f3\u30c8\u300d\u5024\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/li>\n<li><span style=\"color: #000000;\">\u30c1\u30fc\u30e0 A \u306e\u300cG\u300d\u30dd\u30b8\u30b7\u30e7\u30f3\u306e\u30d7\u30ec\u30fc\u30e4\u30fc\u306b\u306f<strong>2 \u3064<\/strong>\u306e\u56fa\u6709\u306e\u300c\u30dd\u30a4\u30f3\u30c8\u300d\u5024\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/li>\n<li><span style=\"color: #000000;\">\u30c1\u30fc\u30e0 B \u306e\u30dd\u30b8\u30b7\u30e7\u30f3\u300cF\u300d\u306e\u30d7\u30ec\u30fc\u30e4\u30fc\u306b\u306f<strong>2 \u3064<\/strong>\u306e\u56fa\u6709\u306e\u300c\u30dd\u30a4\u30f3\u30c8\u300d\u5024\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/li>\n<li><span style=\"color: #000000;\">\u30c1\u30fc\u30e0 B \u306e\u30dd\u30b8\u30b7\u30e7\u30f3\u300cG\u300d\u306e\u30d7\u30ec\u30fc\u30e4\u30fc\u306b\u306f\u3001\u56fa\u6709\u306e\u300c\u30dd\u30a4\u30f3\u30c8\u300d\u5024\u304c<strong>1 \u3064<\/strong>\u3042\u308a\u307e\u3059\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">\u3053\u3053\u3067\u3082\u3001 <strong>unique()<\/strong>\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u3001\u30c1\u30fc\u30e0\u3054\u3068\u3001\u30dd\u30b8\u30b7\u30e7\u30f3\u3054\u3068\u306b\u305d\u308c\u305e\u308c\u306e\u4e00\u610f\u306e\u300c\u30dd\u30a4\u30f3\u30c8\u300d\u5024\u3092\u8868\u793a\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#display unique values in 'points' column grouped by 'team' and 'position'\n<span style=\"color: #000000;\">df. <span style=\"color: #3366ff;\">groupby<\/span> ([' <span style=\"color: #ff0000;\">team<\/span> ', ' <span style=\"color: #ff0000;\">position<\/span> '])[' <span style=\"color: #ff0000;\">points<\/span> ']. <span style=\"color: #3366ff;\">single<\/span> ()\n\nteam position\nAF [9, 12]\n      G [5, 7]\nBF [4, 7]\n      G [9]\nName: points, dtype: object<\/span><\/span><\/strong><\/pre>\n<h3><span style=\"color: #000000;\"><strong>\u8ffd\u52a0\u30ea\u30bd\u30fc\u30b9<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u6b21\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001\u30d1\u30f3\u30c0\u3067\u4ed6\u306e\u4e00\u822c\u7684\u306a\u64cd\u4f5c\u3092\u5b9f\u884c\u3059\u308b\u65b9\u6cd5\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/ja\/\u5217\u5185\u306e\u30cf\u309a\u30f3\u30bf\u3099\u306e\u4e00\u610f\u306e\u5024\/\" target=\"_blank\" rel=\"noopener\">\u30d1\u30f3\u30c0: \u5217\u5185\u3067\u4e00\u610f\u306e\u5024\u3092\u898b\u3064\u3051\u308b\u65b9\u6cd5<\/a><br \/><a href=\"https:\/\/statorials.org\/ja\/\u5358\u4e00\u306e\u30cf\u309a\u30f3\u30bf\u3099\u3001\u8907\u6570\u306e\u5217\/\" target=\"_blank\" rel=\"noopener\">\u30d1\u30f3\u30c0: \u8907\u6570\u306e\u5217\u3067\u4e00\u610f\u306e\u5024\u3092\u898b\u3064\u3051\u308b\u65b9\u6cd5<\/a><br \/><a href=\"https:\/\/statorials.org\/ja\/\u30cf\u309a\u30f3\u30bf\u3099\u306f\u5217\u5185\u306e\u7279\u5b9a\u306e\u5024\u3092\u30ab\u30a6\u30f3\u30c8\u3057\u307e\u3059\/\" target=\"_blank\" rel=\"noopener\">\u30d1\u30f3\u30c0: \u5217\u5185\u306e\u7279\u5b9a\u306e\u5024\u306e\u51fa\u73fe\u3092\u6570\u3048\u308b\u65b9\u6cd5<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6b21\u306e\u57fa\u672c\u69cb\u6587\u3092\u4f7f\u7528\u3057\u3066\u3001pandas DataFrame \u5185\u306e\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306e\u4e00\u610f\u306e\u5024\u306e\u6570\u3092\u30ab\u30a6\u30f3\u30c8\u3067\u304d\u307e\u3059\u3002 df. groupby (&#8216; group_column &#8216;)[&#8216; count_column &#8216;]. nuniq [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-2349","post","type-post","status-publish","format-standard","hentry","category-16"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Pandas GroupBy \u3092\u4f7f\u7528\u3057\u3066\u4e00\u610f\u306e\u5024\u3092\u30ab\u30a6\u30f3\u30c8\u3059\u308b\u65b9\u6cd5 - Statology<\/title>\n<meta name=\"description\" content=\"\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001pandas GroupBy \u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u4e00\u610f\u306e\u5024\u306e\u6570\u3092\u30ab\u30a6\u30f3\u30c8\u3059\u308b\u65b9\u6cd5\u3092\u3044\u304f\u3064\u304b\u306e\u4f8b\u3068\u3068\u3082\u306b\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta name=\"robots\" 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