圆周率的计算2

gzj137070928

# CalPiVer2

# 蒙特卡罗的随机投掷石子的比例计算方法
from random import random
from time import perf_counter

DARTS = 1000*1000
hits = 0  # 记录在园内的数量
start = perf_counter()  # 开始计时
for i in range(1, DARTS + 1):
    x, y = random(), random()
    dist = pow(pow(x,2) + pow(y,2), 0.5)
    if dist <= 1:
        hits += 1
pi = 4* hits/DARTS
end = perf_counter()  # 计时结束
print("Pi的值为：%.10f" % pi )
print("计算时间为：%.2f" % (end - start) )