利用groupby对数据进行求和或者求均值聚合

Handsome_zhou

data2 = {'id':['one','two','three','two','one','four'],'time':[10,23,12,34,54,12]}

import pandas as pd
pd.DataFrame(data2)#把字典类型转换成DataFrame类型









data2 = pd.DataFrame(data2)
data2.groupby('id').sum()#利用groupby和sum进行求和聚合操作








data2.groupby('id').mean()#利用groupby和mean进行求均值聚合操作