我有一个 csv 文件,名称为 oldprice oldprofit
k2 6.319044375 0.6469451082
k3 9.2603346875 0.4639390435
k4 10.6868384375 1.1287761798
K1 4.1458078125 0.5129700421
k5 7.2702040625 0.6632701035
K1 8.025495625 0.7561548244
k6 7.73398625 1.017231759
k7 9.8022878125 0.562983695
k8 5.44912125 0.8532092538
k2 9.5360690625 0.5481493305
K1 6.48153375 1.4176140292
K1 6.66228125 1.0444456163
k9 7.5859665625 1.276779643
K1 8.6394253125 0.6690271589
我已将名称排序为升序,然后按降序排序 oldprice(第 3 列)。输出应该是,
K1 6.48153375 1.4176140292
K1 6.66228125 1.0444456163
K1 8.025495625 0.7561548244
K1 8.6394253125 0.6690271589
K1 4.1458078125 0.5129700421
k2 6.319044375 0.6469451082
k2 9.5360690625 0.5481493305
k3 9.2603346875 0.4639390435
k4 10.6868384375 1.1287761798
k5 7.2702040625 0.6632701035
k6 7.73398625 1.017231759
k7 9.8022878125 0.562983695
k8 5.44912125 0.8532092538
k9 7.5859665625 1.276779643
如何在python中生成它?