python 数据帧依照某个栏位分组以后再对某栏位运算后回传新的数据帧

Posted 2021-05-09

def get_phone_stat(group):
    return pd.DataFrame({
            'new_column': group['duration'].sum()
        }, index=[group.name])

df1 = df_phone.groupby('action').apply(get_phone_stat)
df1.index = df1.index.droplevel(0)