pandas group分组与agg聚合
import pandas as pd
dfpd.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
2026/7/28 18:11:43