Installing PythonExtra

PythonExtra lets you write simple games and apps in Python on your ClassPad.
Before you can use it, you need the Hollyhock mod installed and the correct PythonExtra file copied to your calculator.

1. Install Hollyhock

PythonExtra runs inside the Hollyhock environment. You need Hollyhock v2 or v3.

Follow the official installation guide:
https://classpaddev.github.io/#get-started

Make sure Hollyhock is working before proceeding.

2. Download PythonExtra

Choose the file that matches your Hollyhock version:

For Hollyhock v3: PythonExtra.hh3
For Hollyhock v2: PythonExtra-hh2.bin

Download from:
https://classpaddev.github.io/python/#download

3. Copy the file to your ClassPad

Connect your calculator to your computer using a USB cable.
Select USB Mass Storage on the calculator if prompted.

Copy the downloaded file (either PythonExtra.hh3 or PythonExtra-hh2.bin) to the root folder of the calculator’s storage.

Safely disconnect the USB device from your computer.

4. Launch PythonExtra

On your ClassPad, go to the main menu and select System > System (the top‑left icon).
Open the Hollyhock launcher.

You should see an entry named PythonExtra (or similar) in the list. Select it and press execute.

If the calculator freezes, press the reset button on the back, then double‑check that the filename is exactly PythonExtra-hh2.bin (for v2) and that it’s in the correct location.

5. Using PythonExtra

Once PythonExtra starts, you can browse for .py files written with the PythonExtra API.
These files must be saved on the calculator’s storage.

For documentation and API reference:
https://classpaddev.github.io/python/

You can find ready‑to‑run games and apps here:
https://classpaddev.github.io/python/store/

If you run into any issues, check the filename, Hollyhock version, and ensure the file is in the root directory.