dic={} for st in set([i[0] for i in pd.Panel(df_factor_pre_train).to_frame().index.tolist()]): df=pd.Panel(df_factor_pre_train).to_frame().query(‘code==@st‘) a=df.reset_index() a.index=a.minor del a[‘code‘],a[‘minor‘] dic[st]=a
值为dataframe的字典交换键与dataframe的列——通过Panel实现
原文：https://www.cnblogs.com/Yangami/p/14838764.html