faster scipy.percentileofscore ?

[Vincent Davis]

Currently I am using the following:
pgrades = [scipy.percentileofscore(grades,x) for x in grades]

I need the percentile of each number in grades. The problem is that it
takes a long time (a few minutes) because there are 15,000 items in
the list.
does anyone know is there is a faster way?

Thanks
Vincent Davis
720-301-3003