# Activity 29: Master Python Dictionaries Data Structure ### **Overview:** In this activity, you will practice using **dictionaries** to store and manage multiple instances of objects like **Product, Employee, Books, University, and Restaurant**. You will create **dictionaries** for these objects and populate them with details (e.g., names, prices, job titles). This activity is designed to help you understand how to manage collections of data in a structured manner. # **This is a follow-up to Activity : Data Structure Again** Check this: [**ACTIVITY (**](https://activity.hashnode.space/default-guide/system-integration-and-architecture/data-structureeeee)[**hashnode.space**](http://hashnode.space/)[**)**](https://activity.hashnode.space/default-guide/system-integration-and-architecture/data-structureeeee) --- ### **Instructions:** 1. **Create the following Python classes**: * **Product**: Store product details (e.g., product name, price). * **Employee**: Store employee details (e.g., name, job title). * **Books**: Store book details (e.g., title, author). * **University**: Store university details (e.g., name, location). * **Restaurant**: Store restaurant details (e.g., name, cuisine type). 2. **Use dictionaries** to store the details of each class: * Create **dictionaries** for each object (e.g., list of product names, list of prices, list of employee job titles, etc.). * Populate the lists with at least 5 entries per object. 3. **Access and print** the details from the lists. ### **Tasks:** 1. **Define dictionaries** for storing data related to the classes: **Product, Employee, Books, University, and Restaurant**. 2. **Populate the dictionaries** with data for each class, ensuring there are at least 5 entries. 3. **Access and print** the details of each object from the list. **Product**: Store product details (e.g., product name, price). ```python # List of products products = [ { "ID": 1, "Name": "Laptop", "Category": "Electronics", "Price": 750, "Stock": 50, "Supplier Email": "supplier1@gmail.com" }, { "ID": 2, "Name": "Desk Chair", "Category": "Furniture", "Price": 100, "Stock": 200, "Supplier Email": "supplier2@gmail.com" }, { "ID": 3, "Name": "Smartwatch", "Category": "Electronics", "Price": 200, "Stock": 150, "Supplier Email": "supplier3@gmail.com" }, { "ID": 4, "Name": "Notebook", "Category": "Stationery", "Price": 5, "Stock": 500, "Supplier Email": "supplier4@gmail.com" }, { "ID": 5, "Name": "Running Shoes", "Category": "Apparel", "Price": 80, "Stock": 100, "Supplier Email": "supplier5@gmail.com" } ] # Loop through the list of products and print their details for product in products: print(f"ID: {product.get('ID')}, Name: {product.get('Name')}, Category: {product.get('Category')}, Price: {product.get('Price')}, Stock: {product.get('Stock')}, Supplier Email: {product.get('Supplier Email')}") ``` ![](https://cdn.hashnode.com/res/hashnode/image/upload/v1732115819313/6619783d-b801-4e3d-b570-8ffd11e07e08.png align="center") **Employee**: Store employee details (e.g., name, job title). ```python # List of employees employees = [ { "ID": 1, "Name": "John Doe", "Department": "Sales", "Age": 30, "Email": "john.doe@company.com" }, { "ID": 2, "Name": "Jane Smith", "Department": "Human Resources", "Age": 25, "Email": "jane.smith@company.com" }, { "ID": 3, "Name": "Mark Johnson", "Department": "IT", "Age": 40, "Email": "mark.johnson@company.com" }, { "ID": 4, "Name": "Lisa Wong", "Department": "Marketing", "Age": 28, "Email": "lisa.wong@company.com" }, { "ID": 5, "Name": "Paul McDonald", "Department": "Finance", "Age": 35, "Email": "paul.mcdonald@company.com" } ] # Loop through the list of employees and print their details for employee in employees: print(f"ID: {employee.get('ID')}, Name: {employee.get('Name')}, Department: {employee.get('Department')}, Age: {employee.get('Age')}, Email: {employee.get('Email')}") ``` ![](https://cdn.hashnode.com/res/hashnode/image/upload/v1732115831270/ef76335d-fea3-4506-b546-b4b8ce9fb9d8.png align="center") **Books**: Store book details (e.g., title, author). ```python # List of books books = [ { "ID": 1, "Title": "The Great Gatsby", "Author": "F. Scott Fitzgerald", "Genre": "Fiction", "Published Year": 1925, "ISBN": "978-0743273565", "Stock": 20, "Price": 15.99 }, { "ID": 2, "Title": "To Kill a Mockingbird", "Author": "Harper Lee", "Genre": "Fiction", "Published Year": 1960, "ISBN": "978-0060935467", "Stock": 35, "Price": 10.99 }, { "ID": 3, "Title": "1984", "Author": "George Orwell", "Genre": "Dystopian", "Published Year": 1949, "ISBN": "978-0451524935", "Stock": 40, "Price": 9.99 }, { "ID": 4, "Title": "The Catcher in the Rye", "Author": "J.D. Salinger", "Genre": "Fiction", "Published Year": 1951, "ISBN": "978-0316769488", "Stock": 25, "Price": 8.99 }, { "ID": 5, "Title": "A Brief History of Time", "Author": "Stephen Hawking", "Genre": "Non-fiction", "Published Year": 1988, "ISBN": "978-0553380163", "Stock": 10, "Price": 18.99 } ] # Loop through the list of books and print their details for book in books: print(f"ID: {book.get('ID')}, Title: {book.get('Title')}, Author: {book.get('Author')}, Genre: {book.get('Genre')}, Published Year: {book.get('Published Year')}, ISBN: {book.get('ISBN')}, Stock: {book.get('Stock')}, Price: ${book.get('Price')}") ``` ![](https://cdn.hashnode.com/res/hashnode/image/upload/v1732115849735/c9429408-4d44-4fd9-b58e-23ae651f91b2.png align="center") **University**: Store university details (e.g., name, location). ```python # List of universities universities = [ { "ID": 1, "Name": "University of the Philippines", "Location": "Quezon City", "Established Year": 1908, "Type": "Public", "Website": "www.up.edu.ph" }, { "ID": 2, "Name": "Ateneo de Manila University", "Location": "Quezon City", "Established Year": 1859, "Type": "Private", "Website": "www.ateneo.edu" }, { "ID": 3, "Name": "De La Salle University", "Location": "Manila", "Established Year": 1911, "Type": "Private", "Website": "www.dlsu.edu.ph" }, { "ID": 4, "Name": "University of Santo Tomas", "Location": "Manila", "Established Year": 1611, "Type": "Private", "Website": "www.ust.edu.ph" }, { "ID": 5, "Name": "Polytechnic University of the Philippines", "Location": "Manila", "Established Year": 1904, "Type": "Public", "Website": "www.pup.edu.ph" } ] # Loop through the list of universities and print their details for university in universities: print(f"ID: {university.get('ID')}, Name: {university.get('Name')}, Location: {university.get('Location')}, " f"Established Year: {university.get('Established Year')}, Type: {university.get('Type')}, Website: {university.get('Website')}") ``` ![](https://cdn.hashnode.com/res/hashnode/image/upload/v1732115960873/75aee53c-946b-4fe1-b570-a920e6f074f2.png align="center") **Restaurant**: Store restaurant details (e.g., name, cuisine type). ```python # List of restaurants restaurants = [ { "ID": 1, "Name": "Vikings Luxury Buffet", "Location": "Pasay City", "Cuisine Type": "Buffet", "Established Year": 2011, "Website or Contact": "www.vikings.ph" }, { "ID": 2, "Name": "Antonio's Restaurant", "Location": "Tagaytay", "Cuisine Type": "Fine Dining", "Established Year": 2002, "Website or Contact": "www.antoniosrestaurant.ph" }, { "ID": 3, "Name": "Mesa Filipino Moderne", "Location": "Makati City", "Cuisine Type": "Filipino", "Established Year": 2009, "Website or Contact": "www.mesa.ph" }, { "ID": 4, "Name": "Manam Comfort Filipino", "Location": "Quezon City", "Cuisine Type": "Filipino", "Established Year": 2013, "Website or Contact": "www.manam.ph" }, { "ID": 5, "Name": "Ramen Nagi", "Location": "Various Locations", "Cuisine Type": "Japanese", "Established Year": 2013, "Website or Contact": "www.ramennagi.com.ph" } ] # Loop through the list of restaurants and print their details for restaurant in restaurants: print(f"ID: {restaurant.get('ID')}, Name: {restaurant.get('Name')}, Location: {restaurant.get('Location')}, Cuisine Type: {restaurant.get('Cuisine Type')}, Established Year: {restaurant.get('Established Year')}, Website or Contact: {restaurant.get('Website or Contact')}") ``` ![](https://cdn.hashnode.com/res/hashnode/image/upload/v1732115977391/0eeb9f12-97f6-48ef-967c-e6efb66fd89a.png align="center") In this activity, I learned how to use Python dictionaries to store and manage structured data. I understood how to represent different entities, such as students, employees, books, universities, and restaurants, using dictionaries with keys and values. I also learned how to loop through lists of dictionaries to access and print specific details. By applying these techniques, I gained experience in organizing data efficiently and accessing it with the `.get()` method for safe retrieval. This exercise helped me realize the versatility of dictionaries in managing real-world data and how they can be used in various applications. [https://github.com/JovRoncal/MasterPythonDictionaries](https://github.com/JovRoncal/MasterPythonDictionaries)