python—身体质量指数BMI 圆周率的计算

 

height,weight = eval(input())
bmi = weight / pow(height,2)
print("BMI 数值为：{:.2f}".format(bmi))
who,nat = "",""
if bmi < 18.5:
    who,nat = "偏瘦","偏瘦"
elif 18.5 <= bmi < 24:
    who,nat = "正常","正常"
elif 24 <= bmi < 25:
    who,nat = "正常","偏胖"
elif 25 <= bmi < 28:
    who,nat = "偏胖","偏胖"
elif 28 <= bmi <30:
    who,nat = "偏胖","肥胖"
else:
    who,nat = "肥胖","肥胖"
print("BMI指标为：国际'{}',国内'{}'".format(who,nat))

import random
DARTS = eval(input())
hits = 0.0
random.seed(123)
for i in range(1,DARTS+1):
    x,y = random.random(),random.random()
    dist = pow(x**2 + y**2,0.5)
    if dist <=1.0:
        hits = hits + 1
pi = 4 * (hits/DARTS)
print("{:.6f}".format(pi))

　　

 

 

#公式方法


pi = 0
N = 100 #循环的数量或累加的数量
for i in range(N):
    pi = pi + 1/pow(16,i)*(4/(8*i+1)-2/(8*i+4)-1/(8*i+5)-1/(8*i+6))
    print("圆周率值是：{}".format(pi))


#蒙特卡罗方法

import time,random
DARTS = eval(input())
hits = 0.0
strt = time.perf_counter()
random.seed(123)
for i in range(1,DARTS+1):
    x,y = random.random(),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：{:.6f}".format(pi))
print("运行结束时间为：{}".format(time.perf_counter()-strt))

　

 

 

sum = 0
for i in range(1,967):
    if i % 2 ==0:  #偶数为负
        sum = sum-i
    else:
        sum =sum +i #奇数为正
print(sum)