tanakahda https://blog.hatena.ne.jp/tanakahda/ tanakahdaのプログラマ手帳 https://tanakahda.hateblo.jp/ Python faq_datas = pd.read_csv('data/kansentaisakufaq20210315.csv', \ encoding = "shift-jis", header=None, skiprows=[0,1,2], names=['no', 'category1', 'category2', 'question', 'answer']) faq_datas faq_datas.groupby('category1').count() 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftanakahda.hateblo.jp%2Fentry%2F2023%2F01%2F29%2F005051" title="pandasでgroupby@Python - tanakahdaのプログラマ手帳" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> https://cdn-ak.f.st-hatena.com/images/fotolife/t/tanakahda/20230129/20230129004903.png Hatena Blog https://hatena.blog 2023-01-29 00:50:51 rich https://tanakahda.hateblo.jp/entry/2023/01/29/005051 1.0 100%