Unable to do next(model.parameters()) with Pyro models

Hello,

Thank you very much for your reply.
so is the guide just like a snap-shot copy of a Pyro model?

That is, each time after the parameters are sampled from the distribution, does the guide function like a frequentist snap-shot of the Bayesian Pyro model in which its parameter values are fixed at the sampled value?

Thank you,