feat: funny pickle

1 files changed, 120 insertions, 0 deletions

diff --git a/notebooks/a_bit_of_a_pickle.ipynb b/notebooks/a_bit_of_a_pickle.ipynb
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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Pickle"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import pickle\n",
+    "class StudentObject:\n",
+    "    def __init__(self):\n",
+    "        "
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Using `pickle` to write multiple records\n",
+    "- input a student record and save it to a new serial file\n",
+    "- read a student record from that file\n",
+    "- extend your program to work for more than one record"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 20,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "John born on 2025-03-04 15:15:35.959676, full time is yes\n",
+      "John born on 2025-03-04 15:14:04.842286, full time is yes\n",
+      "Jake born on 2025-03-04 15:14:04.842378, full time is yes\n"
+     ]
+    }
+   ],
+   "source": [
+    "import datetime\n",
+    "import pickle\n",
+    "DATA_FILENAME = \"student_data.dat\"\n",
+    "class Student:\n",
+    "    def __init__(self, name, dob):\n",
+    "        self.__Name = name\n",
+    "        self.__DateOfBirth = dob\n",
+    "        self.__FullTime = True\n",
+    "    def GetName(self):\n",
+    "        return self.__Name\n",
+    "    def __str__(self):\n",
+    "        return f\"{self.__Name} born on {self.__DateOfBirth}, full time is {'yes' if self.__FullTime else 'nah'}\"\n",
+    "def write_to_file(obj):\n",
+    "    with open(DATA_FILENAME, 'ab+') as file:\n",
+    "        pickle.dump(obj, file)\n",
+    "        file.close()\n",
+    "def read_from_file():\n",
+    "    with open(DATA_FILENAME, 'rb') as file:\n",
+    "        s1 = pickle.load(file)\n",
+    "        s2 = pickle.load(file)\n",
+    "        file.close()\n",
+    "    print(s1)\n",
+    "    print(s2)\n",
+    "s1 = Student(\"John\", datetime.datetime.now())\n",
+    "s2 = Student(\"Jake\", datetime.datetime.now())\n",
+    "s3 = Student(\"Jaguar\", datetime.datetime.now())\n",
+    "s4 = Student(\"Jack\", datetime.datetime.now())\n",
+    "s5 = Student(\"Jacqueline\", datetime.datetime.now())\n",
+    "s6 = Student(\"Jiashuo\", datetime.datetime.now())\n",
+    "print(s1)\n",
+    "write_to_file(s1)\n",
+    "write_to_file(s2)\n",
+    "write_to_file(s3)\n",
+    "read_from_file()\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Activity 20M, with pickles"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "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": "3.12.7"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}