Finding pi by Monte Carlo sampling

pi.py

from random import uniform

# Variables
inside = 0
outside = 0
radius = 3

total = 1000000 # Number of runs
for i in xrange(total):
	x = uniform(-radius, radius)
	y = uniform(-radius, radius)
	
	if x**2 + y**2 <= radius**2:
		inside += 1
	else:
		outside += 1

ratio = (float(inside)/total)
print "Ratio: %s" % ratio
print "Pi: %s" % (ratio*4)