Lie Ryan writes: > On 06/15/10 21:49, superpollo wrote: > > goal (from e.c.m.): evaluate > > 1^2+2^2+3^2-4^2-5^2+6^2+7^2+8^2-9^2-10^2+...-2010^2, where each > > three consecutive + must be followed by two - (^ meaning ** in > > this context) [...] > Probably bending the rules a little bit: > > >>> sum(x**2 - 8*x - 20 for x in range(1, 2010, 5)) > 536926141 > > another variation: > > >>> sum((x - 10) * (x + 2) for x in range(1, 2010, 5)) > 536926141
Gleefully bending the rules all the way: >>> 536926141 536926141 Cheers! -- http://mail.python.org/mailman/listinfo/python-list
