python - Comparing Float Column with another Float Column -

let's have 2 columns, , b.

      |      b  1             2  5             2  4             3  2             1  2             1 

i compare 'a' , 'b' if values in 'a' more value in 'b' display rows.

my desire outcome this:

      |      b  5             2  4             3  2             1 

thanks guys!