Add files via upload

samdwo300 · Aug 3, 2020 · 2cfaddf · 2cfaddf
1 parent e600813
commit 2cfaddf
Show file tree

Hide file tree

Showing 8 changed files with 3,740 additions and 0 deletions.
diff --git a/python/Numpy_tricks.ipynb b/python/Numpy_tricks.ipynb
diff --git a/python/Time.ipynb b/python/Time.ipynb
diff --git a/python/dictionary.ipynb b/python/dictionary.ipynb
@@ -0,0 +1,308 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Ordered Dictionary"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {
+    "ExecuteTime": {
+     "end_time": "2020-07-31T16:39:49.565359Z",
+     "start_time": "2020-07-31T16:39:49.557360Z"
+    }
+   },
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "OrderedDict([('laundry', 0.5), ('shopping', 2), ('clean', 2), ('movie', 2)])"
+      ]
+     },
+     "execution_count": 1,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "import collections\n",
+    "\n",
+    "tasks = collections.OrderedDict(laundry=0.5, shopping=2, clean=2)\n",
+    "tasks['movie'] = 2\n",
+    "tasks"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {
+    "ExecuteTime": {
+     "end_time": "2020-07-31T16:40:23.102316Z",
+     "start_time": "2020-07-31T16:40:23.099361Z"
+    }
+   },
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "odict_keys(['laundry', 'shopping', 'clean', 'movie'])"
+      ]
+     },
+     "execution_count": 3,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "tasks.keys()"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Default Dictionary"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {
+    "ExecuteTime": {
+     "end_time": "2020-07-31T16:41:11.055182Z",
+     "start_time": "2020-07-31T16:41:11.043800Z"
+    }
+   },
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "'B23'"
+      ]
+     },
+     "execution_count": 5,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "from collections import defaultdict\n",
+    "\n",
+    "classes = defaultdict(lambda: 'Outside')\n",
+    "classes['Math'] = 'B23'\n",
+    "classes['Physics'] = 'D24'\n",
+    "classes['Math']"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {
+    "ExecuteTime": {
+     "end_time": "2020-07-31T16:41:19.770211Z",
+     "start_time": "2020-07-31T16:41:19.763595Z"
+    }
+   },
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "'Outside'"
+      ]
+     },
+     "execution_count": 7,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "classes['English']"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Group Dictionaries"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 9,
+   "metadata": {
+    "ExecuteTime": {
+     "end_time": "2020-07-31T16:42:03.832202Z",
+     "start_time": "2020-07-31T16:42:03.826726Z"
+    }
+   },
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "ChainMap({'name': 'Ben', 'age': 23}, {'name': 'Thinh', 'age': 25})"
+      ]
+     },
+     "execution_count": 9,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "from collections import ChainMap\n",
+    "\n",
+    "#Create multiple dictionaries of friends and their information\n",
+    "friend1 = {'name':'Ben','age':23}\n",
+    "friend2 = {'name':'Thinh', 'age': 25}\n",
+    "\n",
+    "#Group these dictionaries together\n",
+    "friends = ChainMap(friend1, friend2)\n",
+    "friends"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 11,
+   "metadata": {
+    "ExecuteTime": {
+     "end_time": "2020-07-31T16:42:19.594914Z",
+     "start_time": "2020-07-31T16:42:19.591839Z"
+    }
+   },
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "'Ben'"
+      ]
+     },
+     "execution_count": 11,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "friends['name']"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Read-Only Dictionary "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 19,
+   "metadata": {
+    "ExecuteTime": {
+     "end_time": "2020-07-31T16:44:31.196155Z",
+     "start_time": "2020-07-31T16:44:31.193406Z"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "from types import MappingProxyType\n",
+    "\n",
+    "#Can read and edit\n",
+    "classes = {'Math': 'B23','Physics':'D24'}\n",
+    "classes['Math']\n",
+    "classes[\"Math\"] = 'B21'\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 20,
+   "metadata": {
+    "ExecuteTime": {
+     "end_time": "2020-07-31T16:44:32.346687Z",
+     "start_time": "2020-07-31T16:44:32.341659Z"
+    }
+   },
+   "outputs": [
+    {
+     "ename": "TypeError",
+     "evalue": "'mappingproxy' object does not support item assignment",
+     "output_type": "error",
+     "traceback": [
+      "\u001b[0;31m-----------------------------------------------\u001b[0m",
+      "\u001b[0;31mTypeError\u001b[0m     Traceback (most recent call last)",
+      "\u001b[0;32m<ipython-input-20-72d13339503c>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[1;32m      4\u001b[0m \u001b[0mclasses\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0;34m'Math'\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      5\u001b[0m \u001b[0;31m#But can no longer edit\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 6\u001b[0;31m \u001b[0mclasses\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0;34m\"Math\"\u001b[0m\u001b[0;34m]\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0;34m\"D15\"\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
+      "\u001b[0;31mTypeError\u001b[0m: 'mappingproxy' object does not support item assignment"
+     ]
+    }
+   ],
+   "source": [
+    "classes = MappingProxyType({'Math': 'B23','Physics':'D24'})\n",
+    "\n",
+    "#Can read\n",
+    "classes['Math']\n",
+    "#But can no longer edit\n",
+    "classes[\"Math\"] = \"D15\""
+   ]
+  },
+  {
+   "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": "3.8.3"
+  },
+  "latex_envs": {
+   "LaTeX_envs_menu_present": true,
+   "autoclose": false,
+   "autocomplete": true,
+   "bibliofile": "biblio.bib",
+   "cite_by": "apalike",
+   "current_citInitial": 1,
+   "eqLabelWithNumbers": true,
+   "eqNumInitial": 1,
+   "hotkeys": {
+    "equation": "Ctrl-E",
+    "itemize": "Ctrl-I"
+   },
+   "labels_anchors": false,
+   "latex_user_defs": false,
+   "report_style_numbering": false,
+   "user_envs_cfg": false
+  },
+  "toc": {
+   "base_numbering": 1,
+   "nav_menu": {},
+   "number_sections": true,
+   "sideBar": true,
+   "skip_h1_title": false,
+   "title_cell": "Table of Contents",
+   "title_sidebar": "Contents",
+   "toc_cell": false,
+   "toc_position": {},
+   "toc_section_display": true,
+   "toc_window_display": false
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 4
+}