関連ワード:  python groupby multiple columns and sum    pandas groupby multiple columns and sum    python pandas groupby multiple columns and sum    pandas groupby multiple columns sum and count    pandas groupby two columns and sum    python dataframe groupby multiple columns sum    python pandas group by multiple columns sum    pandas groupby two columns and get sum    pandas groupby 2 columns sum    pandas groupby two columns and sum another column  
結果 : python groupby multiple columns and sum