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PART-01-Basics/CH-09
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‎CH-09 Classes/1. Creating and Using a Class/Try it yourself_32.ipynb‎

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{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Try It Yourself"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"<pre>\n",
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"<strong>9-1. Restaurant:</strong> Make a class called Restaurant. The __init__() method for\n",
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"Restaurant should store two attributes: a restaurant_name and a cuisine_type.\n",
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"Make a method called describe_restaurant() that prints these two pieces of\n",
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"information, and a method called open_restaurant() that prints a message \n",
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"indicating that the restaurant is open. Make an instance called restaurant \n",
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"from your class. Print the two attributes individually, and then call both methods.\n",
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"</pre>\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 15,
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"metadata": {},
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"outputs": [],
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"source": [
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"# restaurant.py\n",
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"\n",
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"class Restaurant:\n",
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" \"\"\"Model of a Restaurant\"\"\"\n",
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" def __init__(self, restaurant_name, cuisine_type):\n",
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" \"\"\"Initializing attributes for restaurants.\"\"\"\n",
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" self.restaurant_name = restaurant_name\n",
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" self.cuisine_type = cuisine_type\n",
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" \n",
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" def describe_restaurant(self):\n",
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" \"\"\"Describing restaurant name and cuisine type.\"\"\"\n",
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" print(self.restaurant_name)\n",
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" print(self.cuisine_type)\n",
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" \n",
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" def open_restaurant(self):\n",
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" \"\"\"Show the status of restaurant -i.e.- open/close.\"\"\"\n",
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" print(f\"The restaurant {self.restaurant_name} is open.\")"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 16,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Kwality\n",
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"italian\n"
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]
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}
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],
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"source": [
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"restaurant = Restaurant('Kwality', 'italian')\n",
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"\n",
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"print(restaurant.restaurant_name)\n",
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"print(restaurant.cuisine_type)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 22,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Kwality\n",
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"italian\n",
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"The restaurant Kwality is open.\n"
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]
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}
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],
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"source": [
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"restaurant.describe_restaurant()\n",
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"restaurant.open_restaurant()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 18,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Kwality\n",
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"italian\n"
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]
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}
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],
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"source": [
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"Restaurant.describe_restaurant(restaurant) # Alternate way of calling a class method for an object"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"<pre>\n",
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"<strong>9-2. Three Restaurants:</strong> Start with your class from Exercise 9-1. Create three\n",
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"different instances from the class, and call describe_restaurant() for each\n",
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"instance.\n",
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"</pre>\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 23,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"kebabsville\n",
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"('indian', 'barbecue')\n",
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"None\n",
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"the square\n",
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"['indian', 'asian']\n",
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"None\n",
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"shreemaya celebrity\n",
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"['italian', 'chinese']\n",
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"None\n"
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]
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}
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],
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"source": [
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"r1 = Restaurant('kebabsville', ['indian', 'barbecue'])\n",
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"r2 = Restaurant('the square', ['indian', 'asian'])\n",
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"r3 = Restaurant('shreemaya celebrity', ['italian', 'chinese'])\n",
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"\n",
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"print(r1.describe_restaurant())\n",
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"print(r2.describe_restaurant()) \n",
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"print(r3.describe_restaurant()) # why None gets printed at last???"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"<pre>\n",
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"<strong>9-3. Users:</strong> Make a class called User. Create two attributes called first_name\n",
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"and last_name, and then create several other attributes that are typically stored\n",
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"in a user profile. Make a method called describe_user() that prints a summary\n",
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"of the user’s information. Make another method called greet_user() that prints\n",
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"a personalized greeting to the user.\n",
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"Create several instances representing different users, and call both methods\n",
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"for each user.\n",
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"</pre>"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 36,
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"metadata": {},
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"outputs": [],
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"source": [
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"# users.py\n",
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"\n",
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"class User:\n",
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" \"\"\"Model of a user.\"\"\"\n",
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" def __init__(self, first_name, last_name):\n",
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" \"\"\"Initializing attributes of user.\"\"\"\n",
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" self.first_name = first_name\n",
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" self.last_name = last_name\n",
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" self.location = 'india'\n",
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" self.gender = 'male'\n",
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" self.age = 18\n",
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" \n",
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" \n",
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" def describe_user(self):\n",
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" \"\"\"Print a summary of user's introduction.\"\"\"\n",
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" print(f\"User: {self.first_name.title()} {self.last_name.title()}\\n\\tLocation: {self.location.title()}\\\n",
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" \\n\\tGender: {self.gender.title()}\\n\\tAge: {self.age} years\")\n",
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" \n",
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" def greet_user(self):\n",
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" \"\"\"Greet the user.\"\"\"\n",
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" print(f\"\\nHi {self.first_name.title()} {self.last_name.title()}. Welcome with us.\")"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 37,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"\n",
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"Hi Ishan Karn. Welcome with us.\n",
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"User: Ishan Karn\n",
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"\tLocation: India \n",
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"\tGender: Male\n",
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"\tAge: 18 years\n"
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]
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}
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],
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"source": [
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"user_1 = User('ishan', 'karn')\n",
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"\n",
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"user_1.greet_user()\n",
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"user_1.describe_user()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 39,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"\n",
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"Hi John Criset. Welcome with us.\n",
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"User: John Criset\n",
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"\tLocation: America \n",
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"\tGender: Male\n",
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"\tAge: 18 years\n"
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]
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}
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],
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"source": [
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"user_2 = User('john', 'criset')\n",
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"\n",
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"user_2.location = 'america'\n",
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"user_2.greet_user()\n",
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"user_2.describe_user()"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"<hr>"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.8.3"
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}
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"nbformat_minor": 4
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