{"id":1551,"date":"2022-01-23T10:45:46","date_gmt":"2022-01-23T01:45:46","guid":{"rendered":"https:\/\/aiacademy.jp\/media\/?p=1551"},"modified":"2025-06-03T13:56:40","modified_gmt":"2025-06-03T04:56:40","slug":"%e3%80%90python%e3%80%91pandas-loc-%e3%81%a8-iloc%e3%81%ae%e9%81%95%e3%81%84%e3%81%a8%e3%81%af%ef%bc%9f%e3%80%80%e5%88%9d%e5%bf%83%e8%80%85%e5%90%91%e3%81%91%e3%81%ab%e3%82%8f%e3%81%8b%e3%82%8a","status":"publish","type":"post","link":"https:\/\/aiacademy.jp\/media\/?p=1551","title":{"rendered":"\u3010Python\u3011Pandas loc \u3068 iloc\u306e\u9055\u3044\u3068\u306f\uff1f\u3000\u521d\u5fc3\u8005\u5411\u3051\u306b\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac"},"content":{"rendered":"\n<div class=\"toc\">    <div id=\"toc_container\" class=\"sgb-toc--no-bullets js-smooth-scroll\" data-dialog-title=\"Table of Contents\">\n      <p class=\"toc_title\">\u76ee\u6b21 <\/p>\n      <ul class=\"toc_list\">  <li class=\"first\">    <a href=\"#i-0\">loc\u3068iloc<\/a>  <\/li>  <li>    <a href=\"#i-1\">loc<\/a>  <\/li>  <li>    <a href=\"#i-2\">iloc<\/a>  <\/li>  <li>    <a href=\"#i-4\">\u3010\u7121\u6599\u52d5\u753b\uff1a\u500d\u901f\u3067\u5b66\u3076\uff01\u751f\u6210AI\u3092\u6d3b\u7528\u3057\u305f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u52c9\u5f37\u6cd5\uff08\u77ed\u7e2e\u7248\uff09\u3011<\/a>  <\/li>  <li class=\"last\">    <a href=\"#i-5\">\u2728AI\u4eba\u6750\u30b3\u30fc\u30b9 \u53d7\u8b1b\u304a\u7533\u8fbc\u307f\u53d7\u4ed8\u4e2d\uff01<\/a>  <\/li><\/ul>\n      \n    <\/div><\/div><div class=\"toc\"><p><\/p>\n<\/div><h2 class=\"wp-block-heading\" id=\"i-0\">loc\u3068iloc<\/h2>\n\n\n\n<p>Pandas\u306e<strong>loc\u3068iloc\u306f\u5024\u3092\u62bd\u51fa\u3059\u308b\u305f\u3081\u306e\u30e1\u30bd\u30c3\u30c9<\/strong>\u3067\u3059\u3002<br>\u307e\u305a\u306f\u30b5\u30f3\u30d7\u30eb\u3068\u306a\u308b\u30c7\u30fc\u30bf\u30d5\u30ec\u30fc\u30e0\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import pandas as pd\ndf = pd.DataFrame([[10, 20], [25, 50]], index=[\"1\u884c\", \"2\u884c\"], columns=[\"1\u5217\", \"2\u5217\"])<\/code><\/pre>\n\n\n\n<p><span class=\"keiko_green\">\u3053\u306e\u30b5\u30a4\u30c8\u306f\u3001Python\u3084\u751f\u6210AI\u306a\u3069\u3092\u5b66\u3079\u308b\u30aa\u30f3\u30e9\u30a4\u30f3\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb AI Academy Bootcamp\u304c\u904b\u55b6\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-1\">loc<\/h2>\n\n\n\n<p>\u307e\u305a\u306f\u3001<strong>loc<\/strong>\u306e\u52d5\u4f5c\u304b\u3089\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<br>loc\u306f<strong>\u884c\u540d\u3082\u3057\u304f\u306f\u5217\u540d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u7279\u5b9a\u306e\u5024\u3092\u62bd\u51fa\u3067\u304d\u307e\u3059\u3002<\/strong>\uff08<strong>\u884c\u540d\u3084\u5217\u540d\u3092\u30e9\u30d9\u30eb\u3068\u7f6e\u304d\u63db\u3048\u3066\u9802\u3044\u3066\u3082\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002<\/strong>\uff09<br>1\u5217\u76ee\u30682\u5217\u76ee\u3092\u62bd\u51fa\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>pirnt(df.loc[\"1\u884c\", :])<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8a18\u3092\u5b9f\u884c\u3059\u308b\u3068\u6b21\u306e\u3088\u3046\u306b\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1\u5217    10\n2\u5217    20\nName: 1\u884c, dtype: int64<\/code><\/pre>\n\n\n\n<p>\u4ed6\u306b\u3082\u6b21\u306e\u3088\u3046\u306b\u66f8\u304f\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>print(df.loc[: , [\"1\u5217\", \"2\u5217\"]])<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8a18\u3092\u5b9f\u884c\u3059\u308b\u3068\u6b21\u306e\u3088\u3046\u306b\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>    1\u5217  2\u5217\n1\u884c  10  20\n2\u884c  25  50<\/code><\/pre>\n\n\n\n<p>\u5b58\u5728\u3057\u306a\u3044\u5217\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068NaN\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>print(df.loc[: , [\"1\u5217\", \"5\u5217\"]])<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8a18\u3092\u5b9f\u884c\u3059\u308b\u3068\u6b21\u306e\u3088\u3046\u306b\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>    1\u5217  5\u5217\n1\u884c  10 NaN\n2\u884c  25 NaN<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-2\">iloc<\/h2>\n\n\n\n<p>\u6b21\u306biloc\u306e\u52d5\u4f5c\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<br><strong>iloc\u306findex\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u7279\u5b9a\u306e\u5024\u3092\u62bd\u51fa\u3067\u304d\u307e\u3059\u3002<\/strong>\u3064\u307e\u308a\u3001<strong>\u884c\u3001\u5217\u3092\u756a\u53f7\uff08\u6570\u5b57\u304c\uff10\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff09\u3067\u6307\u5b9a\u3057\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># df.iloc[\u884c, \u5217]\nprint(df.iloc[1:2])# index\u6307\u5b9a\u304c\u53ef\u80fd<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8a18\u3092\u5b9f\u884c\u3059\u308b\u3068\u6b21\u306e\u3088\u3046\u306b\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>    1\u5217  2\u5217\n2\u884c  25  50<\/code><\/pre>\n\n\n\n<p>\u307e\u305f\u3001iloc\u306f\u30b9\u30e9\u30a4\u30b9\u8868\u8a18\u3092\u7528\u3044\u308b\u3053\u3068\u304c\u51fa\u6765\u308b\u305f\u3081\u6b21\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>print(df.iloc[:, -1])  # \u8ca0\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u4f7f\u3044\u3001\u672b\u5c3e\u306e\u8981\u7d20\u304b\u3089\u4f4d\u7f6e\u6307\u5b9a\u30572\u5217\u76ee\u306e\u5168\u3066\u306e\u884c\u3092\u53d6\u5f97\u3002<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>1\u884c    20\n2\u884c    50\nName: 2\u5217, dtype: int64<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-3\"><a href=\"https:\/\/aiacademy.jp\/media\/?p=651\" target=\"_blank\" rel=\"noopener\" title=\"\">\u95a2\u9023\uff1aDataFrame\u306e[]\u3068[[]]\u306b\u95a2\u3057\u3066 \u30ab\u30e9\u30e0\u53d6\u5f97\u65b9\u6cd5\u3092\u7406\u89e3\u3057\u3088\u3046\uff01<\/a><\/h4>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-4\">\u3010\u7121\u6599\u52d5\u753b\uff1a<strong>\u500d\u901f\u3067\u5b66\u3076\uff01\u751f\u6210AI\u3092\u6d3b\u7528\u3057\u305f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u52c9\u5f37\u6cd5\uff08\u77ed\u7e2e\u7248\uff09\u3011<\/strong><\/h2>\n\n\n\n<p>\u751f\u6210AI\u3092\u6d3b\u7528\u3057\u3066\u52b9\u7387\u7684\u306b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u5b66\u3076\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002\u751f\u6210AI\u306e\u57fa\u672c\u7684\u306a\u4ed5\u7d44\u307f\u3084\u52b9\u679c\u7684\u306a\u6d3b\u7528\u6cd5\u3001\u6ce8\u610f\u70b9\u306b\u3064\u3044\u3066\u3082\u8a73\u3057\u304f\u8aac\u660e\u3002\u52c9\u5f37\u6cd5\u3068\u3068\u3082\u306b\u751f\u6210AI\u305d\u306e\u3082\u306e\u306b\u3064\u3044\u3066\u3082\u5b66\u3079\u308b\u5185\u5bb9\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u305c\u3072\u3054\u89a7\u304f\u3060\u3055\u3044\uff01\u3000<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-vimeo wp-block-embed-vimeo wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" src=\"https:\/\/player.vimeo.com\/video\/1069835048?h=e43b17d6de&amp;dnt=1&amp;app_id=122963\" width=\"880\" height=\"495\" frameborder=\"0\" allow=\"autoplay; fullscreen; picture-in-picture; clipboard-write; encrypted-media\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><strong>\u5168\u7de8\u306f\u3001AI Academy\u516c\u5f0fLINE\u3067\u914d\u4fe1\u4e2d\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/lin.ee\/3E4GzWk\" rel=\"nofollow noopener\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" width=\"910\" height=\"517\" src=\"https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2019\/11\/LINE_Buttom.png\" alt=\"\" class=\"wp-image-6799\" style=\"width:158px;height:auto\" srcset=\"https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2019\/11\/LINE_Buttom.png 910w, https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2019\/11\/LINE_Buttom-300x170.png 300w, https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2019\/11\/LINE_Buttom-768x436.png 768w\" sizes=\"auto, (max-width: 910px) 100vw, 910px\"><\/a><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-5\">\u2728AI\u4eba\u6750\u30b3\u30fc\u30b9 \u53d7\u8b1b\u304a\u7533\u8fbc\u307f\u53d7\u4ed8\u4e2d\uff01<\/h2>\n\n\n\n<p><a href=\"https:\/\/aiacademy.jp\/bootcamp\" target=\"_blank\" rel=\"noreferrer noopener\">AI Academy Bootcamp<\/a>&nbsp;\u3067\u306fAI\u30fb\u30c7\u30fc\u30bf\u30b5\u30a4\u30a8\u30f3\u30b9\u3001\u6a5f\u68b0\u5b66\u7fd2\u3001Web\u30a2\u30d7\u30ea\u958b\u767a\u306e\u5b9f\u8df5\u529b\u3092\u9ad8\u3081\u308b\u5168\uff16\u30b3\u30fc\u30b9\u7d0450\u6642\u9593\u4ee5\u4e0a\u306e\u52d5\u753b\u304c\u898b\u653e\u984c\uff01AI\u306e\u5b66\u7fd2\u306b\u5fc5\u9808\u306ePython\u306e\u5b66\u7fd2\u304b\u3089\u59cb\u307e\u308a\u3001IT\u30ea\u30c6\u30e9\u30b7\u30fc\u3001LLM\u5b66\u7fd2\u306a\u3069\u3001\u76ee\u7684\u306b\u5fdc\u3058\u305f\u5e45\u5e83\u3044\u5206\u91ce\u3092\u30ab\u30d0\u30fc\u3057\u3066\u3044\u307e\u3059\u3002LINE\u516c\u5f0f\u3067\u306f\u3001\u304a\u5f97\u306a\u5272\u5f15\u30af\u30fc\u30dd\u30f3\u3082\u30d7\u30ec\u30bc\u30f3\u30c8\u3057\u3066\u3044\u307e\u3059\uff01<\/p>\n\n\n\n<p><strong>\u5358\u72ec\u3067\u5b66\u3076\u3088\u308a\u3001\u5168\u30b3\u30fc\u30b9\u3092\u4e00\u6c17\u306b\u5b66\u3076\u3053\u3068\u3067\u5f97\u3089\u308c\u308b\u300c\u5b66\u7fd2\u30b7\u30ca\u30b8\u30fc\u52b9\u679c\u300d\u304c\u7279\u9577\u3002<\/strong><br>\u57fa\u790e\u304b\u3089\u5fdc\u7528\u307e\u3067\u3001\u30c7\u30fc\u30bf\u5206\u6790\u3068AI\u958b\u767a\u306e\u30b9\u30ad\u30eb\u3092\u52b9\u7387\u3088\u304f\u8eab\u306b\u3064\u3051\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/lin.ee\/3E4GzWk\" target=\"_blank\" rel=\"noreferrer noopener nofollow\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"349\" src=\"https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2019\/11\/\u30af\u30fc\u30dd\u30f3Media06-1024x349.png\" alt=\"\" class=\"wp-image-7228\" srcset=\"https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2019\/11\/\u30af\u30fc\u30dd\u30f3Media06-1024x349.png 1024w, https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2019\/11\/\u30af\u30fc\u30dd\u30f3Media06-300x102.png 300w, https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2019\/11\/\u30af\u30fc\u30dd\u30f3Media06-768x261.png 768w, https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2019\/11\/\u30af\u30fc\u30dd\u30f3Media06-1536x523.png 1536w, https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2019\/11\/\u30af\u30fc\u30dd\u30f3Media06-2048x697.png 2048w, https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2019\/11\/\u30af\u30fc\u30dd\u30f3Media06-940x320.png 940w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/a><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u76ee\u6b21 loc\u3068iloc loc iloc \u3010\u7121\u6599\u52d5\u753b\uff1a\u500d\u901f\u3067\u5b66\u3076\uff01\u751f\u6210AI\u3092\u6d3b\u7528\u3057\u305f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u52c9\u5f37\u6cd5\uff08\u77ed\u7e2e\u7248\uff09\u3011 \u2728AI\u4eba\u6750\u30b3\u30fc\u30b9 \u53d7\u8b1b\u304a\u7533\u8fbc\u307f\u53d7\u4ed8\u4e2d\uff01 loc\u3068iloc Pandas\u306eloc\u3068iloc\u306f\u5024\u3092\u62bd\u51fa\u3059\u308b &#8230; <\/p>\n","protected":false},"author":1,"featured_media":1559,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[105,173],"tags":[],"class_list":{"0":"post-1551","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-105","8":"category-pandas"},"_links":{"self":[{"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/posts\/1551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1551"}],"version-history":[{"count":48,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/posts\/1551\/revisions"}],"predecessor-version":[{"id":7378,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/posts\/1551\/revisions\/7378"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/media\/1559"}],"wp:attachment":[{"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}