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364 changes: 364 additions & 0 deletions 02_exercises/Day_3_Exercise.ipynb
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{
"cells": [
{
"cell_type": "markdown",
"id": "031285e0",
"metadata": {
"id": "031285e0"
},
"source": [
"# Day 3 Exercises\n",
"## Control flow"
]
},
{
"cell_type": "markdown",
"id": "fbcba899",
"metadata": {
"id": "fbcba899"
},
"source": [
"#### 1. Write a conditional that prints different messages if a bank account balance is below 3,000, between 3,000 and 10,000, or over 10,000."
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "607dbccc",
"metadata": {
"colab": {
"base_uri": "https://localhost:8080/"
},
"id": "607dbccc",
"outputId": "7e18972a-b974-48b6-ae85-b8fc4da537de"
},
"outputs": [
{
"output_type": "stream",
"name": "stdout",
"text": [
"Your balance is below 3000\n"
]
}
],
"source": [
"bank_account_balance = 2000\n",
"if bank_account_balance < 3000:\n",
" print(\"Your balance is below 3000\")\n",
"elif bank_account_balance >= 3000 and bank_account_balance <= 10000:\n",
" print(\"Your balance is between 3000 and 10000\")\n",
"elif bank_account_balance > 10000:\n",
" print(\"Your balance is over 10000\")"
]
},
{
"cell_type": "markdown",
"id": "70d0c36a",
"metadata": {
"id": "70d0c36a"
},
"source": [
"#### 2. Create a list, `books`, containing the following items: 'War and Peace', 'Pride and Prejudice', 'Mockingjay', 'Three Musketeers', 'The Adventures of Robinson Crusoe', 'Yevgeniy Onegin'.\n",
"\n",
"Then using slicing or indexing, create the following:\n",
"- An empty list\n",
"- The last item of books\n",
"- List of three items: 'Three Musketeers', 'The Adventures of Robinson Crusoe', 'Yevgeniy Onegin'."
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "66765f0c",
"metadata": {
"colab": {
"base_uri": "https://localhost:8080/"
},
"id": "66765f0c",
"outputId": "c25040c5-e013-4164-ad5a-fcb3c6e9e24f"
},
"outputs": [
{
"output_type": "stream",
"name": "stdout",
"text": [
"[]\n",
"Yevgeniy Onegin\n",
"['Three Muskateers', 'The Adventures of Robinson Crusoe', 'Yevgeniy Onegin']\n"
]
}
],
"source": [
"books = ['War and Peace', 'Pride and Prejudice', 'Mockingjay', 'Three Muskateers', 'The Adventures of Robinson Crusoe', 'Yevgeniy Onegin']\n",
"empty_list = []\n",
"last_item = books[-1]\n",
"three_items = books[3:6]\n",
"\n",
"print(empty_list)\n",
"print(last_item)\n",
"print(three_items)"
]
},
{
"cell_type": "code",
"source": [],
"metadata": {
"id": "KTWLFzE6ceOg"
},
"id": "KTWLFzE6ceOg",
"execution_count": null,
"outputs": []
},
{
"cell_type": "markdown",
"id": "49132b34",
"metadata": {
"id": "49132b34"
},
"source": [
"Using list methods:\n",
"\n",
"- Remove 'Pride and Prejudice' from the list.\n",
"- Insert 'Harry Potter and the Chamber of Secrets' after 'Mockingjay'."
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "6bbf4b07",
"metadata": {
"colab": {
"base_uri": "https://localhost:8080/"
},
"id": "6bbf4b07",
"outputId": "cde66552-8e36-4f4f-ee8c-5b7184c751ed"
},
"outputs": [
{
"output_type": "execute_result",
"data": {
"text/plain": [
"['War and Peace',\n",
" 'Mockingjay',\n",
" 'Harry Potter and the Chamber of Secrets',\n",
" 'Three Muskateers',\n",
" 'The Adventures of Robinson Crusoe',\n",
" 'Yevgeniy Onegin']"
]
},
"metadata": {},
"execution_count": 13
}
],
"source": [
"books.remove('Pride and Prejudice')\n",
"books.insert(2, 'Harry Potter and the Chamber of Secrets')\n",
"books"
]
},
{
"cell_type": "markdown",
"id": "71402dbe",
"metadata": {
"id": "71402dbe"
},
"source": [
"#### 3. Given the list `people`, sort it by people's first name, last name and age. Store the sorted lists as by_first_name, by_last_name, and by_age, respectively.\n",
"\n",
"people = [('Mark', 'Harrison', 56), ('Ken', 'Wolseley', 23), ('Emily', 'Robinson', 77)]"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "dd57f86d",
"metadata": {
"colab": {
"base_uri": "https://localhost:8080/"
},
"id": "dd57f86d",
"outputId": "629965a8-9a76-465d-d512-b546cd1f48b3"
},
"outputs": [
{
"output_type": "stream",
"name": "stdout",
"text": [
"[('Emily', 'Robinson', 77), ('Ken', 'Wolseley', 23), ('Mark', 'Harrison', 56)]\n",
"[('Mark', 'Harrison', 56), ('Emily', 'Robinson', 77), ('Ken', 'Wolseley', 23)]\n",
"[('Ken', 'Wolseley', 23), ('Mark', 'Harrison', 56), ('Emily', 'Robinson', 77)]\n"
]
}
],
"source": [
"people = [('Mark', 'Harrison', 56), ('Ken', 'Wolseley', 23), ('Emily', 'Robinson', 77)]\n",
"people\n",
"sorted_by_first_name = sorted(people, key=lambda x: x[0])\n",
"sorted_by_last_name = sorted(people, key=lambda x: x[1])\n",
"sorted_by_age = sorted(people, key=lambda x: x[2])\n",
"print(sorted_by_first_name)\n",
"print(sorted_by_last_name)\n",
"print(sorted_by_age)"
]
},
{
"cell_type": "markdown",
"id": "1c2ba142",
"metadata": {
"id": "1c2ba142"
},
"source": [
"#### 4. Write a function called `dict_intersect` that takes two dictionaries, d1 and d2, as arguments and returns a set that contains only the keys found in both of the original dictionaries."
]
},
{
"cell_type": "code",
"source": [
"def dict_intersect(d1, d2):\n",
" return set(d1.keys()) & set(d2.keys())\n",
"d1 = {\n",
" \"A\" : \"Apple\",\n",
" \"B\" : \"Ball\",\n",
" \"C\" : \"Cat\",\n",
" \"D\" : \"Dog\"\n",
"}\n",
"d2 = {\n",
" \"B\" : \"Ball\",\n",
" \"C\" : \"Cat\",\n",
" \"D\" : \"Dog\",\n",
" \"E\" : \"Elephant\"\n",
"}\n",
"dict_intersect(d1, d2)"
],
"metadata": {
"colab": {
"base_uri": "https://localhost:8080/"
},
"id": "_OqrBc4whJM6",
"outputId": "51dc4c5c-baf3-41e2-f598-5b62f78e34db"
},
"id": "_OqrBc4whJM6",
"execution_count": null,
"outputs": [
{
"output_type": "execute_result",
"data": {
"text/plain": [
"{'B', 'C', 'D'}"
]
},
"metadata": {},
"execution_count": 27
}
]
},
{
"cell_type": "markdown",
"id": "3b2e1242",
"metadata": {
"id": "3b2e1242"
},
"source": [
"## Reading and Writing"
]
},
{
"cell_type": "markdown",
"id": "70ac8b82",
"metadata": {
"id": "70ac8b82"
},
"source": [
"#### 1. Using `w`, create a file called fruits.txt and write the string \"tangerines\" to it."
]
},
{
"cell_type": "code",
"execution_count": 1,
"id": "f62d6bae",
"metadata": {
"id": "f62d6bae"
},
"outputs": [],
"source": [
"with open(\"fruits.txt\", \"w\") as f:\n",
" f.write(\"tangerines\")"
]
},
{
"cell_type": "markdown",
"id": "c59870b7",
"metadata": {
"id": "c59870b7"
},
"source": [
"#### 2. Next, use a to append the string \"dragon fruit\" to the file on a new line."
]
},
{
"cell_type": "code",
"execution_count": 2,
"id": "d8b37e9a",
"metadata": {
"id": "d8b37e9a"
},
"outputs": [],
"source": [
"with open(\"fruits.txt\", \"a\") as f:\n",
" f.write(\"\\ndragon fruit\")"
]
},
{
"cell_type": "markdown",
"id": "3f34d3b1",
"metadata": {
"id": "3f34d3b1"
},
"source": [
"#### 3. Finally, use the `r` mode to read and print the entire file."
]
},
{
"cell_type": "code",
"execution_count": 3,
"id": "6ce0cf9a",
"metadata": {
"id": "6ce0cf9a",
"colab": {
"base_uri": "https://localhost:8080/"
},
"outputId": "820e31ac-de76-4e84-9232-4a88c5cfa9f5"
},
"outputs": [
{
"output_type": "stream",
"name": "stdout",
"text": [
"tangerines\n",
"dragon fruit\n"
]
}
],
"source": [
"with open(\"fruits.txt\", \"r\") as f:\n",
" print(f.read())"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "lcr-env",
"language": "python",
"name": "python3"
},
"language_info": {
"name": "python",
"version": "3.11.13"
},
"colab": {
"provenance": []
}
},
"nbformat": 4,
"nbformat_minor": 5
}