python - 检查 ISBN 书号是否有效 Python

Question

所以我一直在尝试将这个“验证器”从伪代码转换为 Python，但我不太确定我的值是否被放入列表中。输入第一个值后，出现一条错误消息:'int' object is not callable。但是如果我去掉 isbn = mylist()，它会说 name 'isbn' is not defined。谁能指出我的错误在哪里？

我很确定我没有正确设置我的列表。

这是我正在关注的伪代码:

还有我的代码:

def checkDigit():
    calculateDigit = 0
    count = 1
    calculateDigit = 10 - calculateDigit
    for count in range (1,14):
        mylist = int(input("Please enter the next digit of the ISBN: "))
 #      isbn = mylist()
    while (count <= 13):
        calculateDigit = calculateDigit + isbn[count]
        count = count + 1
        calculateDigit = calculateDigit + (isbn[count] * 3)
        count = count + 1
    while (calculateDigit >= 10):
        calculateDigit = calculateDigit - 10
    if (calculateDigit == 10):
        calculateDigit = 0
    if (calculateDigit == isbn[13]):
        print ("Valid ISBN")
    else:
        print ("Invalid ISBN")



checkDigit()

Answer 1

您收到该错误是因为您将一个 int 分配给 mylist，然后调用它。这相当于

>>>5() # 'int' object is not callable error

尝试像这样为字符串设置您的 isbn

isbn = ""
    for count in range (1,14):
    mylist = int(input("Please enter the next digit of the ISBN: "))
    isbn += mylist

或者像这样的数字列表

isbn = []
    for count in range (1,14):
    mylist = int(input("Please enter the next digit of the ISBN: "))
    isbn.append(mylist)