在Jupyter中无法获取'DataFrameGroupBy'对象

Question

我有https://www.data.gov.au/dataset/airport-traffic-data/resource/f0fbdc3d-1a82-4671-956f-7fee3bf9d7f2的这个csv文件

我正在尝试与

进行汇总

airportdata = Airports.groupby(['Year_Ended_December'])('Dom_Pax_in','Dom_Pax_Out')
airportdata.sum()

但是，我不断收到'DataFrameGroupBy'对象无法调用 它不会打印我想要的数据 如何解决该问题？

Answer 1

在提取列之前，您需要执行sum聚合： airportdata_agg = Airports.groupby(['Year_Ended_December']).sum()[['Dom_Pax_in','Dom_Pax_Out']] 或者，如果您想确保不汇总列，则不使用： airportdata_agg = Airports[['Dom_Pax_in','Dom_Pax_Out', 'Year_Ended_December']].groupby(['Year_Ended_December']).sum()