from random import random
from time import perf_counter
import time
DARTS = 1000*1000
hits = 0.0
start = perf_counter()
scale = 50
print("开始计算圆周率...")
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
if i % (DARTS // scale) == 0:
percent = i / DARTS * 100
bar_len = int(percent // 2)
bar = "#" * bar_len + "." * (scale - bar_len)
print(f"\r{percent:^3.0f}%[{bar}]", end="")
pi = 4 * (hits/DARTS)
print("\n圆周率是 : {}" .format(pi))
print("运行时间是 : {:.5f}s".format(perf_counter()-start))
print("Done!")
