from dpark import DparkContext
dpark = DparkContext()
count = dpark.accumulator(0)
def random_once(*args, **kwrgs):
x = random() * 2 - 1
y = random() * 2 - 1
if x * x + y * y < 1:
count.add(1)
depark.parallelize(range(0, N), 10).foreach(random_once)
print 'PI is roughly ', 4.0 * count.value / N
