9.py 579 Bytes
#!/usr/bin/python

import sys;
import math;

def isPythagorean(a,b,c):

	if((a**2 + b**2) == c**2):
		return True;

	return False;

def getTriplet(threshold):

	for a in range (1,threshold):
		for b in range (1,threshold):
			for c in range (1,threshold):
				if(isPythagorean(a,b,c)):
					if(a+b+c == threshold):
						return [a,b,c];

resultArray = getTriplet(int(sys.argv[1]));
print "Result is: a=" + str(resultArray[0]) + " b=" + str(resultArray[1]) + " c=" + str(resultArray[2]);
print "Product is " + str(int(resultArray[0]) * int(resultArray[1]) * int(resultArray[2]));