python和R对dataframe的分组聚合操作：dplyrgroupbyagggroup_bynuniquereset_indexrenamesummarisen_distinct

Posted 2021-08-05 Data+Science+Insight

python和R对dataframe的分组聚合操作：dplyr、groupby、agg、group_by、nunique、reset_index、rename、summarise、n_distinct

#  仿真数据集

import pandas as pd
import numpy as np

data = {\'产品\':[\'肉类\',\'盐铁\',\'纺织\',\'木材\']*2,
        \'年份\':[1046,1046,1046,1046,1047,1047,1047,1047],
       \'诸侯\':[\'秦\',\'齐\',\'楚\',\'燕\',\'赵\',\'魏\',\'韩\',\'西周\'],
       \'产量\':[180,140,300,200,150,60,80,320],
       \'收益\':[1800,1400,3000,2000,1500,600,800,3200]}

df=pd.DataFrame(data, columns=[\'产品\',\'年份\',\'诸侯\',\'产量\',\'收益\'])

df