Python入门习题5.蒙特卡罗方法计算圆周率

 #CalPi.py
 from random import random
 from math import sqrt
 from time import clock
 DARTS = 10000000
 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 = 4.0 * (hits/DARTS)
 print("pi值是{}".format(pi))
 print("运行时间是：{:5.5}s".format(clock()))