upd

lectures/chap5/notes/codes/Book.py

+class Book:
+    def __init__(self, title=None, edition=None, price=None, currency=None):
+        # instance attributes
+        self.title = title
+        self.authors = []
+        self.chapters = []
+        self.edition = edition
+        self.price = price
+        self.currency = currency
+
+    # Getters and setters for instance attributes
+    def get_title(self):
+        return self.title
+
+    def set_title(self, title):
+        self.title = title
+
+    def get_pages(self):
+        return self.pages
+
+    def set_pages(self, pages):
+        self.pages = pages
+
+    def add_author(self,author):
+        self.authors.append(author)
+
+    def add_chapter(self,chapter):
+        self.chapters.append(chapter)
+
+    def get_edition(self):
+        return self.edition
+
+    def set_edition(self, edition):
+        self.edition = edition
+
+    def get_price(self):
+        return self.price
+
+    def set_price(self, price):
+        self.price = price
+
+    def get_currency(self):
+        return self.currency
+
+    def set_currency(self, currency):
+        self.currency = currency
+
+    # Magic methods
+    def __str__(self):
+        return f'{self.title}, {self.authors}, {self.edition}, {self.price:0.2f} {self.currency}, {self.chapters}'
\ No newline at end of file

lectures/chap5/notes/codes/book_test.ipynb

+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Starting out with Python, ['Tony Gaddis'], 4th, 739.00 NOK, ['Introduction to Programming', 'Introduction to Python', 'Control Statements', 'Functions', 'Introduction to Programming', 'Introduction to Python', 'Control Statements', 'Functions']\n",
+      "Starting out with Python, [], 4th, 126.65 USD, []\n",
+      "Starting out with Python, ['Tony Gaddis'], 4th, 739.00 NOK, ['Introduction to Programming', 'Introduction to Python', 'Control Statements', 'Functions', 'Introduction to Programming', 'Introduction to Python', 'Control Statements', 'Functions']\n",
+      "Title = Starting out with Python, Auhor = ['Tony Gaddis'], Edition = 4th, Price = 739, Currency = NOK\n",
+      "Starting out with Python, ['Tony Gaddis'], 5th, 985.60 NOK, ['Introduction to Programming', 'Introduction to Python', 'Control Statements', 'Functions', 'Introduction to Programming', 'Introduction to Python', 'Control Statements', 'Functions']\n"
+     ]
+    }
+   ],
+   "source": [
+    "from Book import Book\n",
+    "\n",
+    "\n",
+    "sowp_akademika = Book(title=\"Starting out with Python\", edition='4th')\n",
+    "sowp_akademika.set_price(739)\n",
+    "sowp_akademika.set_currency('NOK')\n",
+    "sowp_akademika.add_author('Tony Gaddis')\n",
+    "sowp_akademika.set_pages(896)\n",
+    "sowp_akademika.add_chapter('Introduction to Programming')\n",
+    "sowp_akademika.add_chapter('Introduction to Python')\n",
+    "sowp_akademika.add_chapter('Control Statements')\n",
+    "sowp_akademika.add_chapter('Functions')\n",
+    "\n",
+    "sowp_amazon = Book(title=\"Starting out with Python\", edition='4th')\n",
+    "sowp_amazon.set_price(126.65)\n",
+    "sowp_amazon.set_currency('USD')\n",
+    "sowp_akademika.add_chapter('Introduction to Programming')\n",
+    "sowp_akademika.add_chapter('Introduction to Python')\n",
+    "sowp_akademika.add_chapter('Control Statements')\n",
+    "sowp_akademika.add_chapter('Functions')\n",
+    "\n",
+    "print(sowp_akademika)\n",
+    "print(sowp_amazon)\n",
+    "\n",
+    "print(str(sowp_akademika))\n",
+    "print(repr(sowp_akademika))\n",
+    "\n",
+    "sowp_akademika(price=896*1.1, edition='5th')\n",
+    "\n",
+    "print(sowp_akademika)\n"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.11.2"
+  },
+  "orig_nbformat": 4
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}