[snip] >> What is the square root function in python? > > There's one in the math module. Use the one in gmpy if you have it. Or raise to the power 1/power >>> 9**(1.0/2) 3.0 Also works for cube root, quad root etc. >>> 27**(1.0/3) 3.0 >>> 81**(1.0/4) 3.0 >>> 243**(1.0/5) 3.0 Cheers, Drea