我在这方面遇到了麻烦

Question

def get_age():
    age = int(input())
    if age < 18 or age > 75:
        raise ValueError('Invalid age.')
    return age


def fat_burning_heart_rate(age):

    heart_rate = (220 * 0.70) - age
    return heart_rate

if __name__ == "__main__":
    try:
        heart_rate = fat_burning_heart_rate(age)
        age = get_age()
        print('Fat burning heart rate for a', age, 'year-old:', 
               heart_rate, 'bpm')

    except ValueError as e:
        print(e)
        print('Could not calculate heart rate info.')

到目前为止，我遇到的主要问题是，当我运行此代码时，它会生成一个名称错误，表示未定义“年龄”。当我尝试指定心率=脂肪燃烧心率（年龄）时，就会出现这种情况。我怀疑这与我传递函数参数的方式有关。但是我能做些什么来修复它呢

Answer 1

def fat_burning_heart_rate(age):

heart_rate = (220 * 0.70) - age
if age < 18 or age > 75:
    raise ValueError('Invalid age.')
return heart_rate, age

if __name__ == "__main__":
  try:
    age = int(input("Input age: "))
    heart_rate, age = fat_burning_heart_rate(age)
    print('Fat burning heart rate for a', age, 'year-old:',
          heart_rate, 'bpm')

except ValueError as e:
    print(e)
    print('Could not calculate heart rate info.') 

你不需要得到年龄（）。您可以将该代码添加到fat\u burning\u heart\u rate（）