[cozzyd]

As far as I understand, I don't think even importing is an issue, unless you are distributing the module too as a combined artifact (e.g. docker image). See e.g. https://github.com/pyFFTW/pyFFTW/issues/229

There's a lot of GPL FUD though from commercial interests though.

[kristjansson]

Yeah, there's probably some untested boundaries at the intersection of the GPL, interpreted languages, and their libraries.

Those boundaries are nowhere close to the situation in the OP though. I guess the FUD is working...