python简单入门-----实例圆周率的计算

蒙特卡洛方法：

#calpiv2.py
from random import random
from time import perf_counter
darts=1000*1000
hits=0.0
starts=perf_counter()
for i in range(1,darts+1):
    x,y=random(),random()
    dist=pow(x**2+y**2,0.5)
    if dist<=1.0:
        hits+=1
pi=4*(hits/darts)
print("{}".format(hits),end=" ")
print("圆周率的值是：{}".format(pi))
print("运行时间是：{:.5f}s".format(perf_counter()-starts))