计算圆周率

import math

from tqdm import tqdm

import time

total,s,n,t=0.0,1,1.0,1.0

while(math.fabs(t)>=1e-6):

    total+=t

    n+=2

    s=-s

    t=s/n

k=total*4

print("π值是{:.10f}  运行时间为{:.4f}秒".format(k,time.clock()))

for i in tqdm(range(101)):

    print("\r{:3}%".format(i),end="")

    time.sleep(0.1)