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Calculator App is distributed as a standard Python package on PyPI, so installation is a single pip command. If you want to contribute or experiment with the source, a development install from the GitHub repository is equally straightforward. Both paths are covered below.

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Standard Installation

1

Check Prerequisites

Calculator App requires Python 3.10 or later. Verify your Python version before proceeding:
python --version
You should see output like Python 3.10.x or higher. If your system Python is older, install a newer version from python.org or use a version manager such as pyenv.
2

Install via pip

Install the package from PyPI with a single command:
pip install calculator-app
This installs the calc_app package and registers the calc-app console script on your PATH.
3

Verify the Installation

Launch the calculator to confirm everything is working:
calc-app
You should see the startup banner printed in your terminal:
Simple Calculator - Type math expressions or 'quit'
Set variables: x=5
Use in math: x+3, 2*x, etc.
Solve equations: 6+x=7, 2*x-3=5
Functions: sqrt(16), 9**2, sin(pi/2)
Natural language: '9 squared', 'sqrt of 16', '5 cubed'
Fractions: 1/2 + 1/3, 2 1/2 + 3/4
Type 'meme' to toggle meme mode!
Once you see the > prompt, the calculator is ready to use.

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Development Installation

If you want to hack on the source or run the latest unreleased changes, clone the repository and install it in editable mode: 
git clone https://github.com/Seaus-tech/Calculator-App.git
cd Calculator-App
pip install -e .
The -e flag installs the package in editable mode, meaning any changes you make to the source files in calc_app/ take effect immediately the next time you run calc-app — no reinstall required.
The calc-app command is registered via the console scripts entry point defined in pyproject.toml:
[project.scripts]
calc-app = "calc_app.app:main"
This means calc-app in your terminal maps directly to the main() function inside calc_app/app.py. If the command is not found after installation, ensure your Python environment’s bin (or Scripts on Windows) directory is on your PATH.

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