我有一个像这样的CSV文件
Screen Name,Sports,Music,Movies,Politics,Vehicles,Media,Word Count
henrywinter,0.12,0.005714286,0,0.005714286,0,0.017142857,175
BumbleCricket,0.081818182,0.009090909,0,0,0,0.009090909,110
SamWallaceTel,0.196172249,0.009569378,0,0.004784689,0,0.019138756,209
Marcotti,0.06779661,0,0,0,0,0.02259887,177
现在,我如何用每行的一系列列中的最大值标题填充每一行的列?