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@mantohihihihi(こすま)

データサイエンスで便利なやつ（随時更新）

Last updated at Posted at 2022-05-16

Pandas.DataFrame.isin()

条件に合致するデータを探すときに重宝。
①文字列があるかの確認(Trueか否か)。
20220517-074840.jpg

②複数条件で、データの抽出
20220517-074640.jpg

pandas.DataFrame.groupby()

これを使うことで、特定の列を軸とした集計が可能になる。ここでは、性別とidを軸として集計。20220517-075438.jpg

参考文献
　東京大学のデータサイエンティスト育成講座(著者：塚本 邦尊, 山田 典一, 大澤 文孝, 中山 浩太郎, 松尾 豊)

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