How to get python to copy files to desktop

How do I make python copy a jpeg to the desktop?

import shutil
src = ('1.3.jpg')
dst = ('tEST/nicholas')
count = 1
while count < 10000000000:
    shutil.copyfile(src, dst + str(count) + ".jpg")

    count += 1

This is what I have so far but I want to change the dst folder into the desktop I'm using windows 7