I have a dataframe like this:
name_by_day name a b
-------------------------------
20170901 2017090101 118 241
20170901 2017090102 117 241
20170901 2017090103 88 241
20170901 2017090104 99 241
20170901 2017090105 87 241
我只需要以下内容:
name_by_day a_x b_x a_y b_y a_z b_z ...
---------------------------------------------------
20170901 118 241 117 241 88 241 99 241 87 241
一些想法?