book.py

from Materials import Materials
class Book(Materials):
    def __init__(self, d):
        super().__init__(d[0], d[1], d[2], d[9])
        d.pop(9)
        for i in range(3):
            d.pop(0)
        self.data = d

    def __str__(self):
        return "Author: " + self.data[0] + '\n' 
        + "Description: " + self.data[1] + '\n'
        + "Publisher: " + self.data[2] + '\n'
        + "City: " + self.data[3] + '\n'
        + "Year: " + self.data[4] + '\n'
        + "Series: " + self.data[5] + '\n'
        + "Type: Book\n"