def __init__(self, title="", author=Author(), price=0, copies=0): self.publik = Publication(title, price, copies) self.__author = author
def __init__(self, title="", author=Author(), price=0, copies=0): Publication.__init__(self, title, price, copies) self.title = title self.copies = copies self.price = price self.__author = author
def __init__(self, title="", author=author(), price=0, copies=0): Publication.__init__(self, title, price, copies) self.__author = author