{"height":"190","blog_title":"\u5b50\u4f9b\u306e\u843d\u66f8\u304d\u5e33 Renaissance","width":"100%","provider_url":"https://hatena.blog","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Flinus-mk.hatenablog.com%2Fentry%2Fpnadas_valueerror_len_left_on\" title=\"pandas\u3067ValueError: len(left_on) must equal the number of levels in the index of &quot;right&quot; - \u5b50\u4f9b\u306e\u843d\u66f8\u304d\u5e33 Renaissance\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_name":"Hatena Blog","categories":["pandas","Python","\u30a8\u30e9\u30fc\u5bfe\u51e6\u6cd5"],"description":"pandas\u3092\u4f7f\u3063\u3066DataFrame\u3092\u7d50\u5408\u3057\u3088\u3046\u3068\u3057\u305f\u3089\u3001ValueError: len(left_on) must equal the number of levels in the index of \"right\" \u3068\u3044\u3046\u898b\u6163\u308c\u306a\u3044\u30a8\u30e9\u30fc\u304c\u51fa\u3066\u304d\u305f\u3002 merge\u3092\u4f7f\u3046\u3079\u304d\u3068\u3053\u308d\u3067join\u3092\u4f7f\u3063\u305f\u306e\u304c\u539f\u56e0\u3060\u3063\u305f\u3002 \u4ee5\u4e0b\u306eStackOverflow\u3092\u898b\u305f\u3089\u7591\u554f\u306f\u89e3\u6c7a\u3057\u305f\u3051\u3069\u3001\u81ea\u5206\u306e\u982d\u3092\u6574\u7406\u3059\u308b\u305f\u3081\u306b\u307e\u3068\u3081\u3066\u304a\u304f\u3002 python - Why does Pandas inner join give ValueError: len(left_on) must equal the number of\u2026","author_name":"soratokimitonoaidani","url":"https://linus-mk.hatenablog.com/entry/pnadas_valueerror_len_left_on","author_url":"https://blog.hatena.ne.jp/soratokimitonoaidani/","blog_url":"https://linus-mk.hatenablog.com/","title":"pandas\u3067ValueError: len(left_on) must equal the number of levels in the index of \"right\"","image_url":null,"published":"2020-09-15 21:15:50","type":"rich"}