https://github.com/dplocki/calculator-kata

The full infix calculator kata, written in Python
https://github.com/dplocki/calculator-kata

calculator calculator-python code-kata infix infix-notation-calculator kata python python-3 python3 python311 reverse-polish reverse-polish-notation rpn

Last synced: 3 months ago
JSON representation

The full infix calculator kata, written in Python

• Host: GitHub
• URL: https://github.com/dplocki/calculator-kata
• Owner: dplocki
• License: gpl-3.0
• Created: 2021-10-02T13:40:27.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2023-08-17T18:51:32.000Z (almost 2 years ago)
• Last Synced: 2025-01-14T14:11:37.713Z (5 months ago)
• Topics: calculator, calculator-python, code-kata, infix, infix-notation-calculator, kata, python, python-3, python3, python311, reverse-polish, reverse-polish-notation, rpn
• Language: Python
• Homepage:
• Size: 89.8 KB
• Stars: 0
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# Calculator kata

![GitHub](https://img.shields.io/github/license/dplocki/calculator-kata)

![Python 3](https://img.shields.io/badge/python-3.11-informational)

![GitHub top language](https://img.shields.io/github/languages/top/dplocki/calculator-kata)

[![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)

![GitHub last commit](https://img.shields.io/github/last-commit/dplocki/calculator-kata)

## 📒 Idea

The standard [String Calculator](https://codingdojo.org/kata/StringCalculator/) kata is much simpler that this one. The task is to parse the string, find all numbers and calculate the sum. There is also the [RPN calculator](https://codingdojo.org/kata/RPN/) kata, which is closer to it.

This one is the calculator, which is parsing the input (string) as [infix](https://en.wikipedia.org/wiki/Infix_notation) notated operation and return its result. In short: you can type the mathematical operation in *human way* and see the result.

## ✔️ Functionality

* adding, subtraction

* multiple, division

* negation (minus before some expression)

* power

* brackets (the round one only)

* float numbers, in simple and scientific notation

* simple validation (double operators, letters in place of numbers etc.)

## ⚙️ Run

The module is ready to use:

```py

from calculator import calculate

print(calculate('32 + 45 * 34 - 23'))

```