Python Billing System

This Python script is designed to simulate a simple billing system for a store, allowing users to input products, calculate prices, and apply membership-based discounts.

Table of Contents

• Features
• Usage
• Code Explanation
• Requirements

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Features

1. Product Entry: Allows the user to enter products and their quantities.
2. Price Calculation: Computes the total price based on predefined product prices.
3. Discount Calculation: Applies a discount based on membership type (Gold, Silver, Bronze) for bills over $25.
4. Final Bill Display: Displays the total discounted price.

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Usage

1. Run the Script: Execute the script, and follow the prompts.
2. Enter Products:
   • Press A to add a product.
   • Input the product name and its quantity.
   • Press Q to finish entering products.
3. Enter Membership: Choose from Gold, Silver, Bronze membership options.
4. View Bill: The script will display each product's price, calculate the subtotal, apply any discount, and show the final bill amount.

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Code Explanation

1. enterProducts():

   • This function collects product names and quantities from the user.
   • It stores the data in a dictionary (buyingData), where the product is the key and the quantity is the value.

2. getPrice(product, quantity):

   • Takes a product and its quantity as input.
   • Retrieves the price from a predefined dictionary (priceData) and calculates the subtotal for that product.
   • Prints the calculation in a format like Product: $Price x Quantity = Subtotal.

3. getDiscount(billAmount, membership):

   • Calculates a discount based on the total bill amount and membership type.
   • Gold: 20% discount, Silver: 10%, Bronze: 5%, applicable only if the bill is $25 or more.
   • Prints the discounted price.

4. makeBill(buyingData, membership):

   • Combines the product prices and applies any applicable discounts.
   • Displays the final bill.

5. Execution Flow:

   • The script starts by calling enterProducts() to gather product data.
   • After the user inputs the membership type, makeBill() processes the prices and discounts, and displays the final total.

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