calculator-demo

A basic calculator implementation in Python that provides fundamental arithmetic operations.

Features

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

Usage

As a Module

from calculator import Calculator

calc = Calculator()

# Addition
result = calc.add(10, 5)  # Returns 15

# Subtraction
result = calc.subtract(10, 5)  # Returns 5

# Multiplication
result = calc.multiply(10, 5)  # Returns 50

# Division
result = calc.divide(10, 5)  # Returns 2.0

# Division by zero raises ValueError
try:
    result = calc.divide(10, 0)
except ValueError as e:
    print(f"Error: {e}")

Running the Demo

python3 calculator.py

Testing

Run the unit tests with:

python3 -m unittest test_calculator.py -v

Requirements

• Python 3.x