Simple Calculator App (Python)

Overview

This is a command-line based calculator application built with Python. It supports:

• Addition
• Subtraction
• Multiplication
• Division

Features

• Easy to use CLI interface
• Handles invalid inputs and division by zero
• Includes unit tests for key functionalities

How to Run

Requirements

• Python 3.x
• PyCharm IDE (or any Python environment)

Steps

1. Clone or copy the project files.
2. Open the project in PyCharm.
3. Run calculator.py to use the calculator.
4. To run tests, run test_calculator.py using pytest.

Installation

pip install pytest

Test Cases

Operation	Input	Output
Add	10 + 5	15
Subtract	10 - 5	5
Multiply	10 * 5	50
Divide	10 / 5	2.0
Divide	10 / 0	Error

Author

Shaik Rakheeb - (https://github.com/shaikrakheeb28)