圆周率

from random import random
from time import perf_counter
import time
from tqdm import tqdm
scale = 50
print("执行开始".center(scale//2, "-"))
start = time.perf_counter()
DARTS = 1000*1000*10
hits = 0.0
start = 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 = hits + 1
pi = 4 * (hits/DARTS)
print("圆周率值是: {}".format(pi))
for i in range(scale + 1):
    a = '*' * i
    b = '.' * (scale - i)
    c = (i/scale)*100
    dur = time.perf_counter() - start
    print("\r{:^3.0f}%[{}->{}]{:.2f}s".format(c,a,b,dur),end="")
    time.sleep(0.1)
print("运行时间是: {:.5f}s".format(perf_counter()-start))
print("\n"+"执行结束".center(scale//2, '-'))