Implementing stan model in pymc3

Questions
3

I’ve been following along here:

http://htmlpreview.github.io/?https://github.com/lauken13/Beginners_Bayes_Workshop/blob/master/stancon2019-intro.html

The author iteratively builds a model based off of the inadequacies of the previous model at each step. The final step is the model that I’m interested in, unfortunately.

The observations are the number of complaints for each building, month. The gaussian prior is on the month index of which there are multiple observations for each index. The model itself is a varying effects, varying slope model with the building as the second level in the hierarchy.

I was unable to recreate the gaussian prior part in pymc3.