For now, we do not add diffusion invariance during training, but just in inference. Therefore, you can just keep x = xp1 while commenting out the remaining (those lines are just used to get the ...

I think the feature is not ready in 3.7.9, but the setup.cfg is ~=3.7.

A faster interpreter, more intelligible errors, more powerful type hints, and a slew of other speedups and tweaks are now ready to try out. The Python programming language releases new versions yearly ...