Python_Control_Flow 🚀

This repository contains a collection of Python scripts showcasing different control flow logic in real-world scenarios. The examples are designed to demonstrate the power of conditionals, loops, functions, error handling, and modularization in Python. The three examples included in this project are:

1. Prime Number Finder
2. Shopping Discount Calculator
3. Order Management System

Table of Contents

Prime Number Finder
Shopping Discount Calculator
Order Management System
Requirements
How to Run

Prime Number Finder

The Prime Number Finder script checks for prime numbers within a given range. Prime numbers are integers greater than 1 that are only divisible by 1 and themselves.

How it Works 🎉
The user inputs an integer n, and the program returns all prime numbers less than n.
The logic uses nested loops to check the divisibility of each number and a helper function to flag whether a number is prime.

Shopping Discount Calculator

The Shopping Discount Calculator script is a simple tool for calculating the total price of items in a shopping cart after applying various discounts. It includes error handling to ensure valid discounts are applied.

Key Features 🎉
The function apply_discount() ensures discounts are between 0% and 100%. Invalid discounts are handled using try-except blocks, returning 0 for invalid values. The calculate_cart() function aggregates the total price of the cart after applying discounts.

Example Usage

# Example cart
cart_items = [(100, 10), (200, 20), (50, 5)]
print(f"Total cart price: {calculate_cart(cart_items)}")  # Output: 315.0

Order Management System

The Order Management System simulates an online store where users can add and remove items from their cart, apply discounts, and process orders. This example demonstrates a robust control flow that incorporates:

-Inventory management: tracking items and their stock.
-Cart management: adding and removing items while updating stock.
-Discount system: applying valid discounts to the total cart price.
-Order processing: checking cart content and completing payment

Key Features 🎉
Inventory validation (checks for stock availability).
Error handling for invalid inputs (like incorrect discount codes or payment methods).
A continuous loop to allow users to interact with the system multiple times.

# Example
# Adding items to cart
add_to_cart('laptop', 2)
add_to_cart('phone', 1)

# Applying a discount and checking out
apply_discount_to_cart("SAVE10")
process_order("credit")

Requirements

Python 3.x No additional libraries or packages are required for this project.

How To Run

1 clone the Repository

git clone https://github.com/PETERMUTWIRI/Python_Control_Flow.git

2 Navigate into the project directory

cd Python_Control_flow

3 Run the Python Scripts

python prime_numbers.py      # For prime number finder
python shopping_discount.py  # For shopping discount calculator
python Online_order_System.py   # For order management system