检查 ISBN 书号是否有效 Python

Question

So I have been trying to convert this 'validator' from Pseudocode to Python, but I'm not too sure if my values are being put into a list. After I enter the first value, an error appears saying: 'int' object is not callable . But then if I get rid of isbn = mylist() , it says that name 'isbn' is not defined . Can someone point me out where my mistake is?

I'm pretty sure I'm not setting up my list correctly.

Here is the PSEUDOCODE I'm following:

And my code:

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

youre getting that error because you assign an int to mylist, and then call it. This is equivalent to something like

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

try setting up your isbn like so for a string

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

or like this for a list of numbers

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

Answer 2

mylist is an integer, you can't perform a mylist() operation

I think what you intend to do is isbn.append(mylist) so when the loop ends you have all the items stored in isbn