【python】详解pandas.DataFrame.resample根据时间分别聚合多列数据（二）

how真的很好用啊！！！

import pandas as pd

data = pd.DataFrame({'open':[1,2,3,4,5],'close':[2,3,4,5,6]},index = pd.date_range('12/12/2017',periods=5,freq='T'))

data
Out[5]: 
                     open  close
2017-12-12 00:00:00     1      2
2017-12-12 00:01:00     2      3
2017-12-12 00:02:00     3      4
2017-12-12 00:03:00     4      5
2017-12-12 00:04:00     5      6

data.resample('2T',how={'open':'mean','close':'last'})
__main__:1: FutureWarning: how in .resample() is deprecated
the new syntax is .resample(...)..apply()
Out[6]: 
                     open  close
2017-12-12 00:00:00   1.5      3
2017-12-12 00:02:00   3.5      5
2017-12-12 00:04:00   5.0      6