Official website: installation instructions, user guide, troubleshooting, etc.
PythonTool is available for Minecraft 1.8, 1.8.8, 1.8.9, 1.9, 1.9.4, 1.10, 1.10.2, 1.11.2 & 1.12.2. The code is organised using branches, one for each version.
Ever wanted to learn how to program? PythonTool Mod provides an interactive way to get started with Python programming inside your Minecraft adventures. Python is a very common and powerful -yet simple- programming language that can be used to modify your Minecraft worlds in real time. There are plenty of resources, have a look at the How to create your own scripts section to learn more!
Build arbitrary things, turn blocks into bombs or create interactive games, just with one click! This mod builds on top of Raspberry Jam Mod and provides a visual interface to use in-game Python scripts. Write your own scripts or get plenty of examples online, and use them inside the game with the mighty Computer Block and Python Script items. Have a look at the possibilities PythonTool Mod offers in the following video: