Library 1

def clear():
    print('\n' * 100)


def new_book():
    clear()
    book_title = input("Enter book title: ")
    author_name = input("Enter the author's name: ")
    publisher_name = input("Enter the publisher's name: ")
    while True:
        try:
            number_pages = int(input("Enter the total number of pages: "))
        except ValueError:
            print("Please enter an integer value.")
            continue
        if number_pages < 0:
            print("Sorry, your response must not be negative.")
            continue
        else:
            break
    while True:
        try:
            number_copies = int(input("Enter the total number of copies: "))
        except ValueError:
            print("Please enter an integer value.")
            continue
        if number_copies < 0:
            print("Sorry, your response must not be negative.")
            continue
        else:
            break
    while True:
        try:
            is_paperback = bool(input("Is the book paperback?(True/False): "))
        except ValueError:
            print("Please enter either True or False.")
            continue
        else:
            break
    book_string = book_title + "," \
                  + author_name + "," \
                  + publisher_name \
                  + "," + str(number_pages) + "," \
                  + str(number_copies) \
                  + "," + str(is_paperback)
    f = open("C:\\Users\\tfqsy\\OneDrive\\Desktop\\library.txt", "a+")
    f.write(book_string)
    f.close()
    print("Book added!")
    input()


def author_search(author_name):
    f = open("C:\\Users\\tfqsy\\OneDrive\\Desktop\\library.txt", "r")
    author_found = False
    for book_string in f:
        book_info = book_string.split(',')
        if (book_info[1].lower() == author_name.lower()):
            print("Title: " + book_info[0])
            print("Author: " + book_info[1])
            print("Publisher: " + book_info[2])
            print("Number of Pages: " + book_info[3])
            print("Number of Copies: " + book_info[4])
            print("Paperback?: " + book_info[5])
            author_found = True
    if (not author_found):
        print("Author not found")
    input()


while (True):
    clear()
    print("1 - Add new book to the text file")
    print("2 - Search for a book through author name")
    print("3 - Close Menu\n")
    menu_choice = int(input("Enter your choice (1 - 3): "))

    clear()
    if (menu_choice == 1):
        new_book()
    elif (menu_choice == 2):
        author_name = input("Enter the author's name: ")
        author_search(author_name)
    elif (menu_choice == 3):
        break
    else:
        print("Invalid choice")