Overview

This Python script simulates a bookstore queue system using the deque collection from Python's collections module. Clients can join the queue, be served, and check the queue size interactively.

Features

• Client Class: Represents a client in the bookstore queue with the following attributes:
  • name: The name of the client.
  • book: The title of the book the client intends to purchase.
• BookstoreQueue Class: Manages the queue of clients with the following methods:
  • is_empty: Checks if the queue is empty.
  • enqueue: Adds a client to the queue.
  • dequeue: Serves and removes the client at the front of the queue.
  • size: Returns the number of clients in the queue.

How It Works

1. Input: The user can choose from options to add clients to the queue, serve clients, check the queue size, or exit the program.
2. Processing: Clients are added to or removed from the queue based on user input.
3. Output: Feedback is provided for each action, such as the addition of a client or serving a client.

Usage

Prerequisites

• Python 3.x

Steps to Run

1. Save the script in a file, e.g., bookstore_queue.py.
2. Open a terminal or command prompt.
3. Run the script using the command:

   python bookstore_queue.py
   

4. Follow the interactive prompts to manage the queue.

Example Interaction

Sample Input:

1. Add client to queue
2. Serve client
3. Check queue size
4. Exit

Enter your choice (1-4): 1
Enter client's name: Alice
Enter the book title: Python Programming

Sample Output:

Alice has been added to the queue.

Options:
1. Add client to queue
2. Serve client
3. Check queue size
4. Exit

Enter your choice (1-4): 2
Alice has been served and bought the book 'Python Programming'.

Code Structure

Client Class

• Represents a client with a name and book title.

BookstoreQueue Class

• Manages the queue using a deque object.

main Function

• Provides an interactive menu for the user to manage the bookstore queue.

Customization

• The script can be extended to include additional features, such as viewing all clients currently in the queue or saving queue data to a file.
• Input validation can be enhanced to handle unexpected or incorrect inputs.

License

This script is provided "as-is" for educational purposes. Feel free to modify and use it in your projects.