Probabilistic Programming, Python, PyMC3

https://github.com/pymc-devs/pymc3

https://github.com/CamDavidsonPilon/Probabilistic-Programming-and-Bayesian-Methods-for-Hackers
Chapter 2
https://github.com/CamDavidsonPilon/Probabilistic-Programming-and-Bayesian-Methods-for-Hackers/tree/master/Chapter2_MorePyMC