# oop/super.explicit.py
class Book:

    def __init__(self, title, publisher, pages):
        self.title = title
        self.publisher = publisher
        self.pages = pages


class Ebook(Book):

    def __init__(self, title, publisher, pages, format_):
        Book.__init__(self, title, publisher, pages)
        self.format_ = format_


ebook = Ebook(
    'Learn Python Programming', 'Packt Publishing', 500, 'PDF')
print(ebook.title)  # Learn Python Programming
print(ebook.publisher)  # Packt Publishing
print(ebook.pages)  # 500
print(ebook.format_)  # PDF


"""
$ python super.explicit.py
Learn Python Programming
Packt Publishing
500
PDF
"""