Calculator App

Overview

Calculator.py is a Python module that implements a simple calculator class, Calculator, designed to perform basic arithmetic operations, calculate power and area of a circle, and manage a history of calculations. This module is ideal for educational purposes, simple mathematical operations, and as a base for more complex calculator applications.

This module is primarily used in conjunction with prompt engineering exercises and demos. It is not intended for production use.

Features

The Calculator class supports the following operations:

• Addition (add): Adds two numbers and returns the result.
• Subtraction (subtract): Subtracts the second number from the first and returns the result.
• Multiplication (multiply): Multiplies two numbers and returns the result.
• Division (divide): Divides the first number by the second. If the second number is zero, it prints "Cannot divide by zero" and returns None.
• Power (power): Raises the first number to the power of the second number and returns the result.
• Calculate Circle Area (calculate_circle_area): Calculates the area of a circle given its radius and returns the result.
• Save to File (save_to_file): Saves the history of calculations to a specified file.
• Load from File (load_from_file): Loads a history of calculations from a specified file.
• Clear History (clear_history): Clears the history of calculations.

Usage Example

from calculator import Calculator

calc = Calculator(0)
print(calc.add(10, 5))  # 15
print(calc.subtract(10, 5))  # 5
print(calc.multiply(10, 5))  # 50
print(calc.divide(10, 2))  # 5.0
print(calc.power(2, 3))  # 8.0
print(calc.calculate_circle_area(5))  # 78.53981633974483
calc.save_to_file('history.txt')
calc.clear_history()
print(calc.load_from_file('history.txt')) 

You can test this example by running the following command:

python example.py

Dependencies

• Python 3.x
• math module (standard library)

Installation

No installation is required beyond having Python 3.x installed on your system. Simply download calculator.py and include it in your project.

Virtual Environment

You can use virtual environments to manage dependencies and isolate your project environment. To create a virtual environment, run the following commands:

python3 -m venv venv
source venv/bin/activate

then run the following command to install the dependencies:

pip install -r requirements.in

Testing

To run the example usage file, execute the following command:

python3 example.py

Contribution

Contributions are welcome! Please fork the repository, make your changes, and submit a pull request.