Python：添加用户输入的书籍

Question

I'm trying to add a book to an inventory list, based on user input and get a "str not callable" error?

#Add a book, based on user input 
def add_book():
    # purpose: add a book
    print()
    print("Adding a New Book..")
    print()
        
    title = input("Title> ")
    author = input("Author> ")
    isbn = input("ISBN> ")
    callnumber = input("CallNumber> ")
    stock = input("Stock> ")
    loaned = input("Loaned> ")        
    inventory.append = (title, author, isbn, callnumber, stock, loaned)

I'm not sure how else to ask for input to append the new book to existing ist of books?

Answer 1

That is not the correct syntax to append to a list .

Assuming inventory is a list type, the append() method takes a single argument and appends it to the list.

inventory.append(title)

You will need to do this for each element you wish to append, or append them as a tuple of items

inventory.append((title, author, isbn, callnumber, stock, loaned))

Answer 2

You will first want to adjust your function to allow for a inventory "list" to be passed to it, like so:

def add_book(inventory):

From here you will be able to append a "tuple" with values separated by commas, like so:

inventory.append((title, author, isbn, callnumber, stock, loaned))

Be careful to make sure to have the tuple elements stored in their own parentheses, in addition to the ones from the append method.

Answer 3

You haven't define the inventory . You have to devine above in your code then variable inventory the use it.