Sum square difference

6.py

@@ -0,0 +1,16 @@
+def sumsq(num):
+	s = 0
+	for i in range(num + 1):
+		s += i**2
+	return s
+
+def sqsum(num):
+	s = 0
+	for i in range(num + 1):
+		s += i
+	return s**2
+
+def main(num):
+	print sqsum(num) - sumsq(num)
+
+main(100)