Python Can'；t修复我的体重指数计算器上的计算模块

为了消除这个错误，我反复修改了代码。对不起，如果这件事真的很简单，我想自学。谢谢你的关注

def main():
  intro()
  GetWeight()
  GetHeight()
  Calculate()

def intro():
  print ("Welcome to the BMI Calculator by Rabucc")
  def GetWeight():
  weight = float(input("How much do you weigh in pounds?\n "))
  return weight

def GetHeight():
  height = input("Enter your height in inches:\n ")
  return height

def Calculate():
  height = GetHeight()
  weight = GetWeight()
  BMI = (weight * 703) / (height * height)
  print ("Your BMI is", BMI)
main()

在修改代码之后，我现在有了

line 25, in Calculate
BMI = (weight * 703) / (height * height)
TypeError: unsupported operand type(s) for *: 'function' and 'int'

---

这会导致程序重复这两个问题，然后计算BMI。为什么要重复这些问题？

在您的

GetHeight

方法中，您没有将其设置为浮动，类似于您在

GetWeight

方法中所做的：

更改此项：

def main():
intro()
GetWeight()
GetHeight()
Calculate()

def intro():
print ("Welcome to the BMI Calculator by Rufus Hunt")

def GetWeight ():
weight = float(input("How much do you weigh in pounds?\n "))
return weight

def GetHeight ():
height = float(input("Enter your height in inches:\n "))
return height

def Calculate ():
height = GetHeight()
weight = GetWeight()
BMI = (weight * 703) / (height * height)
print ("Your BMI is", BMI)
main()

为此：

height = input("Enter your height in inches:\n ")

另外，您还可以删除

main

中的调用

GetWeight

和

GetHeight

。您的

Calculate

方法已在以下几行为您处理此问题：

height = float(input("Enter your height in inches:\n "))

因此，代码将是：

height = GetHeight()
weight = GetWeight()

演示：

def main():
  intro()
  Calculate()

def intro():
  print ("Welcome to the BMI Calculator by Rabucc")
  def GetWeight():
  weight = float(input("How much do you weigh in pounds?\n "))
  return weight

def GetHeight():
  height = float(input("Enter your height in inches:\n "))
  return height

def Calculate():
  height = GetHeight()
  weight = GetWeight()
  BMI = (weight * 703) / (height * height)
  print ("Your BMI is", BMI)
main()

---

您不需要缩进GetWeight函数定义。缩进对Python很重要。试试这个

Welcome to the BMI Calculator by Rabucc
Enter your height in inches:
 5
How much do you weigh in pounds?
 5
Your BMI is 140.6

已清理版本：

def main():
  intro()
  weight = GetWeight()
  height = GetHeight()
  Calculate(weight, height)

def intro():
  print ("Welcome to the BMI Calculator by Rabucc")

def GetWeight():
  weight = float(input("How much do you weigh in pounds?\n "))
  return weight

def GetHeight():
  height = input("Enter your height in inches:\n ")
  return height

def Calculate(lb,inches):
  BMI = (lb * 703) / (lb * inches)
  print ("Your BMI is", BMI)

main()

---

请注意，在Python中，模块是一个文件，您的

Calculate

是一个函数。此外，这甚至不应该运行，因为在

def GetWeight（）

之后没有缩进。当我修复缩进时，它运行平稳。它不能正常工作，因为它坚持要求我每个人输入两次体重和身高，但它会运行。您不需要从

intro

中调用

GetWeight

和

GetHeight

Calculate

已经调用了它们。您确定您的实际代码没有

weight=GetWeight

位置，即没有

（）

？这可以解释您报告的错误。虽然这是代码的一个问题，但它不会产生错误消息OP is reporting。@tobias_k在修改后，Python 3.4上的代码运行良好。你那边发生了什么？谢谢你的意见。我已经做了改变，但我仍然无法获得计算BMI的程序。如何修复calculate部分？它肯定会（没有尝试），但OP似乎得到了一个不同的错误，因此问题似乎有问题。@idjaw当我使用更改运行它时，仍然得到了

TypeError:不支持的操作数类型*：“function”和“int”

错误。我使用的是3.5.1将高度转换为浮点数。基于OP的原始错误，我认为缩进是因为复制粘贴问题。我不认为OP在他们的编辑器中看到了这一点。缩进是否会导致GetWeight未正确声明，从而导致weight=GetWeight（）将函数分配给weight，而不是整数？这就解释了错误信息。错误的缩进将给出准确的结果：缩进错误。我敢肯定OP在将代码移植到他们的问题时犯了一个间隔错误。哦，可能是这样。代码运行良好（除了多次调用以获取体重和身高），因此问题的措辞可能不恰当。就这样吧。

def main():
  intro()
  weight = GetWeight()
  height = GetHeight()
  Calculate(weight, height)

def intro():
  print ("Welcome to the BMI Calculator by Rabucc")

def GetWeight():
  weight = float(input("How much do you weigh in pounds?\n "))
  return weight

def GetHeight():
  height = input("Enter your height in inches:\n ")
  return height

def Calculate(lb,inches):
  BMI = (lb * 703) / (lb * inches)
  print ("Your BMI is", BMI)

main()

def get_float(prompt):
    while True:
        try:
            return float(input(prompt))
        except ValueError:
            pass

def bmi(weight, height):
    return 703. * weight / height**2

def main():
    print("Welcome to the BMI Calculator by Rabucc")
    weight = get_float("How much do you weigh (in pounds)? ")
    height = get_float("How tall are you (in inches)? ")
    print("Your BMI is {:.1f}".format(bmi(weight, height)))

if __name__=="__main__":
    main()