身體指數bmi
國際版
#CalBMIv1.py
height, weight = eval(input("請輸入身高(米)和體重(公斤)[逗號隔開]: "))
bmi = weight / pow(height, 2)
print("BMI 數值爲：{:.2f}".format(bmi))
who = ""
if bmi < 18.5:
who = "偏瘦"
elif 18.5 <= bmi < 25:
who = "正常"
elif 25 <= bmi < 30:
who = "偏胖"
else:
who = "肥胖"
print("BMI 指標爲:國際'{0}'".format(who))
國內版
#CalBMIv2.py
height, weight = eval(input("請輸入身高(米)和體重\(公斤)[逗號隔開]: "))
bmi = weight / pow(height, 2)
print("BMI 數值爲：{:.2f}".format(bmi))
nat = ""
if bmi < 18.5:
nat = "偏瘦"
elif 18.5 <= bmi < 24:
nat = "正常"
elif 24 <= bmi < 28:
nat = "偏胖"
else:
nat = "肥胖"
print("BMI 指標爲:國內'{0}'".format(nat))
綜合版
#CalBMIv3.py
height, weight = eval(input("請輸入身高(米)和體重(公斤)[逗號隔開]: "))
bmi = weight / pow(height, 2)
print("BMI 數值爲：{:.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 指標爲:國際'{0}', 國內'{1}'".format(who, nat))
圓周率公式法
#CalPiV1.py
pi = 0
N = 100
for k in range(N):
pi += 1/pow(16,k)*( \
4/(8*k+1) - 2/(8*k+4) - \
1/(8*k+5) - 1/(8*k+6) )
print("圓周率值是: {}".format(pi))
蒙特卡羅方法
#CalPiV2.py
from random import random
from time import perf_counter
DARTS = 1000*1000
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("圓周率值是: {}".format(pi))
print("運行時間是: {:.5f}s".format(perf_counter() - start))