Answer :
#!/usr/bin/env python
import random
import math
count_inside = 0
for count in range(0, 10000): d = math.hypot(random.random(), random.random())
if d < 1: count_inside += 1
count += 1
print 4.0 * count_inside / count
import random
import math
count_inside = 0
for count in range(0, 10000): d = math.hypot(random.random(), random.random())
if d < 1: count_inside += 1
count += 1
print 4.0 * count_inside / count