整数列表python

Question

我有这个列表的问题,我想将每个数字乘以一定的数字,但目前列表中的每个数据都是一个字符串,如果我将列表转换为整数或将字符串转换为整数把它变成一个列表,我收到一个错误.

def main():
    isbn = input("Enter you're 10 digit ISBN number: ")
    if len(isbn) == 10 and isbn.isdigit():
        list_isbn = list(isbn)
        print (list_isbn)
        print (list_isbn[0] * 2)
    else:
        print("Error, 10 digit number was not inputted and/or letters were inputted.")
        main()


if __name__ == "__main__":
    main()
    input("Press enter to exit: ")

Answer 1

您可以将每个单独的字符转换为整数:

list_isbn = [int(c) for c in isbn]

演示:

>>> isbn = '9872037632'
>>> [int(c) for c in isbn]
[9, 8, 7, 2, 0, 3, 7, 6, 3, 2]