file handling; oop exercises

code/README.md

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+This folder contains code and notebooks that not referenced by the docs.

code/hello_world.ipynb

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+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "id": "b557902c-d9fa-4c1e-872b-9df086463660",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Hello, World!\n"
+     ]
+    }
+   ],
+   "source": [
+    "print(\"Hello, World!\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "id": "4aa2bdfa-23a1-48fe-b9ce-0658bf8de8db",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "5"
+      ]
+     },
+     "execution_count": 2,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "2+3"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "id": "7604f907-b28b-4444-a987-2b3cc8a9b1f9",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "6"
+      ]
+     },
+     "execution_count": 3,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "2*3"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "bb90b656-0a0e-494b-a29f-3632ac6c10a2",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3 (ipykernel)",
+   "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": "3.12.4"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}

code/hello_world.py

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+print("Hello, world!")

data/creating_file_example.txt

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+This text will be written in a newly created file.

data/csv_example.csv

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+"name","country","city","skills"
+"Aurora","Indonesia","Palembang","Python"

data/reading_file_example.txt

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+This is an example to show how to open a file and read.
+This is the second line of the text.
+I love python.

data/writing_file_example.txt

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+This text has to be appended at the end.

docs/_toc.yml

@@ -50,11 +50,13 @@ parts:
         sections:
           - file: python/python_fundamentals_2/list_comprehension
           - file: python/python_fundamentals_2/higher_order_functions
+          - file: python/python_fundamentals_2/file_handling
       - file: python/oop/index
         sections:
           - file: python/oop/classes
           - file: python/oop/inheritance
           - file: python/oop/polymorphism
+          - file: python/oop/oop_exercises
 
   - caption: NumPy
     chapters:

docs/python/oop/oop_exercises.md

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+# OOP Exercises
+
+Create a class called `PersonAccount`. It has `firstname`, `lastname`, `incomes`, and `expenses` properties. It also has `total_income()`, `total_expense()`, `account_info()`, `add_income()`, `add_expense()` and `account_balance()` methods. Incomes is a dict of income amount and its description. The same goes for expenses.