python计算圆周率代码_基于Python计算圆周率pi代码实例⼀ 计算公式：
⼆ 实现代码
（1）
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)
（2）
import time
import math
class Index(object):
def __init__(self, number=50, decimal=2):
self.decimal = decimal
self.number = number
self.a = 100/number
def __call__(self, now, total):
percentage = self.percentage_number(now, total)
二叉树的循环遍历well_num = int(percentage / self.a)
progress_bar_num = self.progress_bar(well_num)
result = "\r%s %s" % (progress_bar_num, percentage)
return result
def percentage_number(self, now, total):
return round(now / total * 100, self.decimal) def progress_bar(self, num):
well_num = "#" * num
space_num = " " * (self.number - num)
return '[%s%s]' % (well_num, space_num) index = Index()
total,s,n,t=0.0,1,1.0,1.0
while(math.fabs(t)>=1e-6):
total+=t
n+=2
s=-s
三相异步电动机的接线方式t=s/n
k=total*4
start = 371
for i in range(start + 1):
print(index(i, start), end='')
time.sleep(0.01)
print("\n π值是{:.10f}".format(k))
(3)
import time
import math
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
scale=50
print("".center(scale//2,"-"))
python基础代码100例start = time.perf_counter()
for i in range(scale+1):
a="*"*i
b="."*(scale-i)
c=(i/scale)*100spring festival英语作文40词
d=time.perf_counter() - start
little是什么意思中文print("\r{:^3.0f}%[{}->{}]{:.2f}s".format(c,a,b,d),end='')java用的编程软件
time.sleep(0.1)
print("\n π值是{:.10f}".format(k))
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