Question

number_of_people = input("Enter number of people attending the picnic: ")
if number_of_people.isnumeric():

    number_of_donuts = input("Enter number of donuts each person will want: ")
    if number_of_donuts.isnumeric():

        min_box = (number_of_people * number_of_donuts ) // 12
        box_remainder = (number_of_people * number_of_donuts ) % 12
        if box_remainder != 0:
            min_box = min_box + 1

        print("Minimum boxes of donuts needed: ", min_box)

        donuts_left = (min_box * 12) - (number_of_people * number_of_donuts )
        print("Donuts left over:", donuts_left)

        if min_box <= 5:
            donut_cost = 8 * min_box
        elif min_box <= 20:
            donut_cost = 7.50 * min_box
        else:
            donut_cost = 6 * min_box

        print ("Donuts cost: ",format(donut_cost, '.2f'))

    else:
        print(number_of_donuts, "is not a valid number")

else:
    print (number_of_people, "is not a valid number")

我真的很困惑。我希望能够告诉那个人他们输入了错误的输入，但是如果我将输入更改为int（输入。我不知道如果他们没有输入int就通知用户。

我收到的错误 TypeError：不能将序列乘以类型＆＃39; str＆＃39;

的非int

Answer 1

我认为这个问题就在这条线上了？

donuts_left = (min_box * 12) - (number_of_people * number_of_donuts )

我认为问题是number_of_people和number_of_donuts都是字符串，但您可能想要处理数字。

尝试以下方法。（我添加了x = int(x)行以将str转换为int s。）

number_of_people = input("Enter number of people attending the picnic: ")
if number_of_people.isnumeric():
    number_of_people = int(number_of_people)

    number_of_donuts = input("Enter number of donuts each person will want: ")
    if number_of_donuts.isnumeric():
        number_of_donuts = int(number_of_donuts)

        min_box = (number_of_people * number_of_donuts ) // 12
        box_remainder = (number_of_people * number_of_donuts ) % 12
        if box_remainder != 0:
            min_box = min_box + 1

        print("Minimum boxes of donuts needed: ", min_box)

        donuts_left = (min_box * 12) - (number_of_people * number_of_donuts )
        print("Donuts left over:", donuts_left)

        if min_box <= 5:
            donut_cost = 8 * min_box
        elif min_box <= 20:
            donut_cost = 7.50 * min_box
        else:
            donut_cost = 6 * min_box

        print ("Donuts cost: ",format(donut_cost, '.2f'))

    else:
        print(number_of_donuts, "is not a valid number")

else:
    print (number_of_people, "is not a valid number")

无法通过非Int Python进行乘法排序

1 个答案: