from random import random
from math import sqrt
from time import clock
DARTS = 1000000000
hits = 0.0
clock()
for i in range(1, DARTS+1):
x, y = random(), random()
dist = sqrt(x ** 2 + y ** 2)
if dist <= 1.0:
hits = hits + 1
pi = 4 * (hits/DARTS)
print("Pi值是{}.".format(pi)
print("运行时间是: {:5.5}s".format(clock()))
)