Python TypeError:创建年龄转换器时-：'str'和'int'的操作数类型不受支持？

有人知道为什么这行不通吗？单击链接以查看打印屏幕

如果你能帮我修一下，我会特别感激的

提前感谢,

Ben Johnson输入返回一个字符串。字符串不能等于整数。如果PetAge==1是错误的，那么其他部分也是错误的，因为不能使用字符串进行计算。你必须写作

PetAge= int(input("blabla"))

在这里你的程序应该是怎样的

if pet=="cat":
    PetAge=int(input("Enter your cat age"))
    if PetAge==1:
        print ("blabla")
    elif PetAge==2:
        print ("morebla")
    else:
        CatAge=(PetAge-2)+25+4
        print ("Your cat is {} cat years old".format(CatAge))

还记得

"26" != 26

---

这应该会给你一些关于如何将你的程序划分成函数的想法，使它更容易思考

def get_int(prompt):
    """
    Prompt user to input an integer value

    Loop until a good value is entered,
      then return the value
    """
    while True:
        try:
            return int(input(prompt))
        except ValueError:
            # couldn't convert to int - try again
            pass

def cat_age(age):
    """
    Convert human years to cat years
    """
    if age == 1:
        return 15
    elif age == 2:
        return 25
    else:
        return 25 + (age - 2) * 4

# A more advanced technique:
#   a function that creates a function!
def make_age_function(given_ages, rate):
    num = len(given_ages)
    last = given_ages[-1] if num else 0
    def age_function(age):
        """
        Given an age in years, calculate human-equivalent age
        """
        if age < num:
            return given_ages[age - 1]
        else:
            return last + (age - num) * rate
    return age_function

# Now let's use it to make a dog_age function:
dog_age = make_age_function([15, 25], 4)
# dog_age gives exactly the same results as cat_age

# How about a turtle_age function?
turtle_age = make_age_function([], 0.45)

# We need to keep track of which pets
#   we know how to convert ages for
known_pets = {
    "cat":    cat_age,
    "dog":    dog_age,
    "turtle": turtle_age
}

def main():
    print("Welcome to the Pet Age Converter")
    while True:
        print("What kind of pet do you have? (or hit Enter to exit)")
        pet = input().strip().lower()

        if pet in known_pets:
            age = get_int("What is your {}'s age? ".format(pet))
            # look up the appropriate age converter function
            age_fn = known_pets[pet]
            # and use it to calculate pet age
            pet_age = age_fn(age)
            # now show the results
            print("Your {} is {} {} years old.".format(pet, pet_age, pet))
        elif pet:
            print("I didn't know anyone had a {}!".format(pet))
        else:
            # exit the while loop
            break

if __name__ == "__main__":
    main()

---

一般来说，尝试将代码示例内联到有关StackOverflow的问题中。也许你可以在这个网站上找到你认为最相关的部分，并保留一个指向完整源代码的链接。我想这在Python2.7中也会起到预期的作用，但是你使用的是Python3.x。。。看见