[turbinerneiter]

It's a microcontroller. It has maybe 512k of storage and 128k of memory. The Numpy package probably is ~100Mb

The controller is running CircuitPython which is a fork of MicroPython - a tiny re-implementation Python for microcontrollers.

[sk0g]

Valid point! Might still be able to get a speed up if you can write and import your own C code though.