用python计算圆周率PI‪‬‪‬‪‬‪‬‪‬‮‬‪‬‫‬‪‬‪‬‪‬‪‬‪‬‮‬‭‬‫‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‫‬‪‬‪‬‪‬‪‬‪‬‮‬‭‬‫‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‫‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‫‬

CalPi2.py

from random import random
from time import perf_counter
DARTS = 1000*10000
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))
print("运行时间是：{:.5f}s".format(perf_counter()-start))

CalPi2.py 带进度条版本

from random import random
from time import perf_counter
from tqdm import tqdm # 导入进度条库

DARTS = 1000*1000
hits = 0.0
start = perf_counter()

用tqdm包裹循环，自动显示进度条

for i in tqdm(range(1, DARTS+1), desc="蒙特卡洛模拟中", unit="次"):
x, y = random(), random()
dist = pow(x ** 2 + y ** 2, 0.5)
if dist <= 1.0:
hits = hits + 1

pi = 4 * (hits/DARTS)
print("\n圆周率值是：{}".format(pi))
print("运行时间是：{:.5f}s".format(perf_counter()-start))