Question

我试图用Python创建一个BMI计算器，但是当我运行该程序时，它说：＆＃39; IndentationError：期望一个缩进的块＆＃39;。它说错误在第7行，但是我错了什么？我使用的是Python 3.5.1

print ('Give your weight in kg: ')
weight_kg = float(raw_input())
print ('Give your length in meters: ')
length_meters = float(raw_input())
bmi = weight_kg / (length_meters * length_meters)
if bmi <= 18.5:
print ('Your BMI is'), bmi, ('what means that you have got underweight')
elif bmi > 18.5 and bmi <= 25:
print ('Your BMI is'), bmi, ('what means that you have got a normal weight')
elif bmi > 25 and bmi < 30:
print ('Your BMI is'), bmi, 'what means that you have got overweight')
elif bmi >= 30:
print ('Your BMI is'), bmi, ('what means that you have got obese')

Answer 1

在Python中，下级语句由其缩进级别标识，与大括号或某些其他语言使用的开始/结束关键字相反。因此，Python中的适当缩进不仅仅是样式约定，而且实际上是正确功能所必需的。在您的情况下，您需要缩进您的从属语句。请尝试以下方法：

print ('Give your weight in kg: ')
weight_kg = float(input())
print ('Give your length in meters: ')
length_meters = float(input())
bmi = weight_kg / (length_meters * length_meters)
if bmi <= 18.5:
    print ('Your BMI is', bmi, 'what means that you have got underweight')
elif bmi > 18.5 and bmi <= 25:
    print ('Your BMI is', bmi, 'what means that you have got a normal weight')
elif bmi > 25 and bmi < 30:
    print ('Your BMI is', bmi, 'what means that you have got overweight')
elif bmi >= 30:
    print ('Your BMI is', bmi, 'what means that you have got obese')

如何修复预期的缩进块错误？

1 个答案: