import pandas as pd
import numpy as np
frame = pd.DataFrame(np.arange(12).reshape(4,3),
index=[['a','a','b','b'],[1,2,1,2]],
columns=[['miao','miao','shuo'],['red','green','yellow']])
frame
如何按miao,green 这一列 降序排序?
frame.sort_values(by=?,ascending=False),by啥?
求大神指点,多谢