python is cool

(' DESU'*9000)[1:]

>>37
I don't think so, but let's do:

import sys
import timeit
print timeit.Timer('reduce(int.__add__, xrange(m))', 'm = int(sys.argv[1])').timeit(10000) / 10000.0

Result: adding 500 numbers that way takes 0.000139416266593 seconds (Athlon 64 3000+, Python 2.4.2 official build, Windows 2000)