Python入门习题5.蒙特卡罗方法计算圆周率

 1 #CalPi.py
 2 from random import random
 3 from math import sqrt
 4 from time import clock
 5 DARTS = 10000000
 6 hits = 0.0
 7 clock()
 8 for i in range(1, DARTS+1):
 9     x, y = random(), random()
10     dist = sqrt(x ** 2 + y ** 2)
11     if dist <= 1.0:
12         hits = hits + 1
13 pi = 4.0 * (hits/DARTS)
14 print("pi值是{}".format(pi))
15 print("运行时间是：{:5.5}s".format(clock()))