Python中的BMI计算器
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BMI Calculator in Python
提问by oneabdi
The program calculates a person's BMI from the weight and height supplied using the user's input. However, after I enter 'metric' or 'imperial' and press enter, the program closes. The first three print functions work fine and anything after doesn't appear subsequent to me pressing the enter button. How do I fix this?
该程序根据用户输入提供的体重和身高计算出一个人的 BMI。但是，在我输入“公制”或“英制”并按 Enter 后，程序将关闭。前三个打印功能工作正常，在我按下回车按钮后没有出现任何后面的内容。我该如何解决？
print('\t\t\t BMI Calculator')
print('\t\t\t By Abdinasir Hussein')
print('\n Hello, this is a BMI Calculator!')
input('Do you wish to enter metric units or imperial units: ')
while input == 'metric':
height = float(input('Please enter your height input meters(decimals): '))
weight = int(input('Please enter your weight input kg: '))
bmi = weight/(height*height)
if bmi <= 18.5:
print('Your BMI is', bmi,'which means you are underweight.')
elif bmi > 18.5 and bmi < 25:
print('Your BMI is', bmi,'which means you are normal.')
elif bmi > 25 and bmi < 30:
print('your BMI is', bmi,'overweight.')
elif bmi > 30:
print('Your BMI is', bmi,'which means you are obese.')
else:
print('There is an error with your input')
print('Please check you have entered whole numbers\n'
'and decimals were asked.')
while input == 'imperial':
height = int(input('Please enter your height input inputches(whole number): '))
weight = int(input('Please enter your weight input pounds(whole number): '))
bmi = (weight*703)/(height*height)
if bmi <= 18.5:
print('Your BMI is', bmi,'which means you are underweight.')
elif bmi > 18.5 and bmi < 25:
print('Your BMI is', bmi,'which means you are normal.')
elif bmi > 25 and bmi < 30:
print('Your BMI is', bmi,'which means you are overweight')
elif bmi > 30:
print('Your BMI is', bmi,'which means you are obese.')
else:
print('There is an error with your input')
print('Please check you have entered whole numbers\n'
'and decimals were asked.')
input('\n\nPlease press enter to exit.')
I've now changed it, but how do I go about editing this block:
我现在已经改变了它，但是我该如何编辑这个块：
input = input('Do you wish to enter metric units or imperial units: ')
if input == 'metric':
height = float(input('Please enter your height input meters(decimals): '))
weight = int(input('Please enter your weight input kg: '))
bmi = weight/(height*height)
if bmi <= 18.5:
print('Your BMI is', bmi,'which means you are underweight.')
elif bmi > 18.5 and bmi < 25:
print('Your BMI is', bmi,'which means you are normal.')
elif bmi > 25 and bmi < 30:
print('your BMI is', bmi,'overweight.')
elif bmi > 30:
print('Your BMI is', bmi,'which means you are obese.')
else:
print('There is an error with you inputput')
print('Please check you have entered whole numbers\n'
'and decimals where asked.')
回答by Simeon Visser
You shouldn't use while. You meant to write:
你不应该使用while. 你的意思是写：
units = input('Do you wish to enter metric units or imperial units: ')
if units == 'metric':
......
elif units == 'imperial':
......
回答by rafee
input is a function not variable. You have to assign input to a variable before comparing.
输入是一个不可变的函数。在比较之前，您必须将输入分配给变量。
in = input('Do you wish to enter metric units or imperial units: ')
then
然后
if (in == "Metric")
回答by harryp
you can use if again just like
你可以再次使用 if 就像
if units == 'metric':
height = ...
weight = ...
bmi = ...
if bmi <= 18.5:
print...
elif bmi > 18.5 and <= 25:
print...
.....
elif units == 'imperial':
height = ...
weight = ...
bmi = ...
if bmi <= 18.5:
print...
elif bmi..
....
else:
print('plese enter one units.')
and don't forget bmi = 25 and 30 :)
并且不要忘记 bmi = 25 和 30 :)
回答by Kawin M
Instead of while input == 'imperial':
代替 while input == 'imperial':
Use
用
else:
height = float(input('Please enter your height input inputches: '))
weight = int(input('Please enter your weight input pounds: '))
Or use
或使用
elif input == 'imperial':
height = float(input('Please enter your height input inputches: '))
weight = int(input('Please enter your weight input pounds: '))
else:
print("Please enter any one of the units")`
回答by Amogh Nath
height = float(input("Your height in metres:"))
weight = int(input("Your weight in kilograms:"))
bmi = round(weight/ (height * height), 1)
if bmi <= 18.5:
print('Your BMI is', bmi, 'which means you are underweight.')
elif bmi > 18.5 and bmi < 25:
print('Your BMI is', bmi, 'which means you are normal.')
elif bmi > 25 and bmi < 30:
print('Your BMI is', bmi, 'which means you are overweight.')
elif bmi > 30:
print('Your BMI is', bmi, 'which means you are obese.')
else:
print('There is an error with your input')
