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按值排序

df.sort_values(by='B',ascending=False)

A B C D

2013-01-06 0.790942 0.906111 0.093382 0.032258

2013-01-04 0.252073 0.862004 0.063743 0.900931

2013-01-05 0.079194 0.779128 0.907441 0.659853

2013-01-03 0.104701 0.647015 0.812034 0.477090

2013-01-01 0.615859 0.354072 0.741003 0.055112

2013-01-02 0.985261 0.017241 0.481214 0.538970

按轴排序

#ascending设置上升还是下降（顺序还是倒序）

#axis=1,按照列咯

df.sort_index(axis=1,ascending=False)

D C B A

2013-01-01 0.055112 0.741003 0.354072 0.615859

2013-01-02 0.538970 0.481214 0.017241 0.985261

2013-01-03 0.477090 0.812034 0.647015 0.104701

2013-01-04 0.900931 0.063743 0.862004 0.252073

2013-01-05 0.659853 0.907441 0.779128 0.079194

2013-01-06 0.032258 0.093382 0.906111 0.790942