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pgmpy is a Python package for working with Bayesian Networks and related models such as Directed Acyclic Graphs, Dynamic Bayesian Networks, and Structural Equation Models. It combines features from both causal inference and probabilistic inference literatures to allow users to seamlessly work between both. It implements algorithms for structure learning/causal discovery, parameter estimation, probabilistic and causal inference, and simulations.

The documentation is available at:

Installation instructions are available at:

Our mailing list is at:!forum/pgmpy .

We have our community chat at gitter.


We have a few example jupyter notebooks here:

For more detailed jupyter notebooks and basic tutorials on Graphical Models check:


If you use pgmpy in your scientific work, please consider citing us:

Ankan, Ankur, Abinash, Panda. "pgmpy: Probabilistic Graphical Models using Python." Proceedings of the Python in Science Conference. SciPy, 2015.


  series = {SciPy},
  title = {pgmpy: Probabilistic Graphical Models using Python},
  ISSN = {2575-9752},
  url = {},
  DOI = {10.25080/majora-7b98e3ed-001},
  booktitle = {Proceedings of the Python in Science Conference},
  publisher = {SciPy},
  author = {Ankan,  Ankur and Panda,  Abinash},
  year = {2015},
  collection = {SciPy}



The latest codebase is available in the dev branch of the repository.

Building from Source

To install pgmpy from the source code:

$ git clone
$ cd pgmpy/
$ pip install -r requirements.txt
$ python install

To run the tests, you can use pytest:

$ pytest -v pgmpy

If you face any problems during installation let us know, via issues, mail or at our gitter channel.


Please feel free to report any issues on GitHub:

Before opening a pull request, please have a look at our contributing guide If you face any problems in pull request, feel free to ask them on the mailing list or gitter.

If you would like to implement any new features, please have a discussion about it before starting to work on it. If you are looking for some ideas for projects, we a list of mentored projects available at:

Building Documentation

We use sphinx to build the documentation. Please refer: for steps to build docs locally.


pgmpy is released under MIT License. You can read about our license at here