@haypo - yes, I think you're right. Can you delete those two lines (or I can upload another version if you prefer).

I think the pragmatic thing here is to proceed by reading /dev/urandom (as we've discussed). It's not safe to raise an exception in py_getrandom from what I can see; a thorough effort to signal the lack of randomness to outer functions needs more code examination than I have time to carry out at the moment.

From looking at when PyRandom_Init is called and how the hash secret is used; I think it is safe to proceed with /dev/urandom. The general understanding is that urandom has a lower entropy quotient than random, so it's hopefully not going to be used in strong crypto contexts.