Python CLI Applications

A collection of lightweight command-line applications developed in Python. This repository demonstrates core programming fundamentals, structured data management, error handling, and modular function design.

---

Repository Structure

├── 01-expense-tracker/
│   └── expense.py
├── 02-grade-analyzer/
│   └── grade.py
├── 03-guessing-game/
│   └── guess.py
├── 04-inventory-system/
│   └── inventory.py
└── 05-cli-calculators/
    ├── menu.py
    └── menu_list.py

---

Projects Overview

Project Directory	File	Description
01-expense-tracker	expense.py	Tracks spending across categories, compares expenses against user-defined budget limits, and generates financial summaries.
02-grade-analyzer	grade.py	Accepts student scores, calculates class averages, identifies highest/lowest marks, and maps scores to letter grades.
03-guessing-game	guess.py	Interactive CLI game utilizing the random module with proximity hints and attempt counters.
04-inventory-system	inventory.py	Manages stock items, accumulates category expenditure, and generates itemized reports.
05-cli-calculators	menu.py / menu_list.py	Command-line calculators for two-operand math (menu.py) and dynamic list-based operations (menu_list.py).

---

Core Concepts Covered

• Data Structures: Utilization of dictionaries, nested lists, and set operations (set()).
• Error & Exception Handling: Input validation using try-except blocks to handle ValueError and ZeroDivisionError.
• Modular Program Design: Function separation (main(), helper methods) and execution guards (if __name__ == "__main__":).
• Built-in Modules: Use of standard modules like random and math.

---

Usage Instructions

Prerequisites

• Python 3.x installed on your system.

Running a Project

1. Clone the repository:

git clone [https://github.com/YourUsername/repository-name.git](https://github.com/YourUsername/repository-name.git)

2. Navigate into the specific project directory:

cd 01-expense-tracker

3. Execute the script:

python expense.py