求Π

from random import random
from math import sqrt
from time import perf_counter
DARTS = 10000000000
hits = 0.0
perf_counter()
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的值是{}.".format(pi))
print("运行时间是：{:.5f}s".format(perf_counter()))