class_02.py

"""
A simple class example.
"""

class Book:
    """
    A simple book class.
    """

    def __init__(self, isbn: str, title: str, author: str):
        """
        The constructor
        """
        self.isbn = isbn
        self.title = title
        self.author = author
        self.page = 0
        self.notes = []

    def set_note(self, note: str, page: int)-> int:
        """
        Sets a reader note.
        """
        self.notes.append((note, page))

    def goto_page(self, page_number: int):
        """
        Sets the current page number. Maximum of 1000.
        """
        if page_number < 1000 > 0:
            self.page = page_number
    
    def __repr__(self) -> str:
        return f"Object id: {id(self)}. Author: {self.author}. Title: {self.title}. ISBN: {self.isbn}."

mybook: Book = Book(author="K Heckenlively", isbn="1510752242", title="Restoring Faith in ... Science")
print(mybook)