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LLSP PY
File conversion

Convert LLSP to PY

Verified by Adam B.· reviewed by FE Editorial ·updated Sep 9, 2026
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Is it possible to convert LLSP to PY?
Yes - LLSP converts to PY.

A .llsp is a zipped SPIKE project whose logic lives in a project.json, and tools like pyspikon read that JSON to emit a .py file. The cleanest route is to rewrite the program in SPIKE's built-in Python mode. Converters miss some blocks (notably Events and My Blocks), so expect to finish the code by hand.

Also to PY: KGL · UI · PYO

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Tested on macOS, Windows & Linux
Last verified Sep 2026

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Why convert LLSP to PY?

.llsp is a word-block (Scratch-style) SPIKE project, while .py is plain Python text you can run in the SPIKE App's Python mode, in an editor, or version-control with git. People convert to Python for real code control, reuse, and readable diffs.

How to convert LLSP to PY

pyspikon

Unzip the .llsp, then run python pyspikon.py path-to-file new-file-path to generate a .py from the project's project.json. Note the tool is deprecated and can be glitchy.

LEGO Education SPIKE App (Python mode)

Open a new Python project in the SPIKE App and re-create the logic as code; this is the most reliable way to get clean, runnable .py.

flippertools

Use this command-line toolkit for SPIKE/MINDSTORMS project files to inspect and pull the program out of the .llsp before hand-porting it to Python.

About these formats

.LLSP LEGO Education SPIKE Project

An .llsp file is a project saved by the LEGO Education SPIKE App version 2, holding the block-based or Python program a student built for a SPIKE Prime or SPIKE Essential robot. It is a ZIP…

Open .LLSP details →
.PY Python Source Code File

A .py file is a Python source code file - plain text containing a program or script written in the Python language. To read the code, open it in any text editor. To run it, install Python…

Open .PY details →

Quality & what to watch

  • Converters do not cover every block - Events and My Blocks are commonly skipped and must be rewritten manually.
  • pyspikon is marked deprecated, so its output may need cleanup before it runs on the hub.
  • A word-block project rarely maps one-to-one to idiomatic Python; treat the output as a starting draft.

Frequently asked questions

Is pyspikon still maintained?
No, it is flagged as deprecated and can be glitchy, so review its output carefully or rebuild in Python mode.
Which blocks fail to convert?
Events and My Blocks are typically not supported by the converter and need to be recreated by hand.
Can I run the .py on my SPIKE hub?
Yes, once cleaned up you can paste it into a Python project in the SPIKE App and download it to the hub.
Where is the actual program stored in a .llsp?
Inside the zip as project.json, which the converters parse to build the Python file.