Interactive Calculator (Command-Line)

A simple Python command-line calculator that supports basic operations:

• Addition
• Subtraction
• Multiplication
• Division (with zero-division handling)

Features

• Interactive menu-based input
• Clear error messages for invalid inputs
• Modular code (operations are in a separate file)
• Unit tests using pytest

Project Structure

Interactive-calculator-command-line/ │── calculator.py # Main program │── operations.py # Core math functions │── tests/ │ └── test_operations.py # Unit tests │── requirements.txt # Dependencies (pytest)