企业官网建设流程全解析

import pandas as pd df=pd.DataFrame({'Country':['China','China','India', 'India', 'America', 'Japan', 'China', 'India'], 'Income':[10000, 10000, 5000, 5002, 40000, 50000, 8000, 5000], 'Age':[5000, 4321, 1234, 4010, 250, 250, 4500, 4321]})#依次是函数、字典、列表 df