%s_macro -Std*2

Thanks for the excellent course on Support Vector Machines. 

There are some points that I am still confused with. 

1- scoring="%s_macro" % score in the 4th line of the coding. what does it imply?

2- I am experiencing a little difficulty in understanding the for loop for zipping using the r% and multiplying standard deviation by two. I did not quite understand the function of the coding.

Best Regards