Issue
My application requires Python extensions for scientific computing.
Resolution
Currently the large number of specialized dependencies make some scientific computing libraries difficult to integrate with our general purpose common runtime.
For Heroku users wanting to work with scipy, scikit-learn and other similar libraries, we recommend using our support for Dockerfile based apps https://devcenter.heroku.com/articles/container-registry-and-runtime
There is an example of a Docker-based scikit-learn app here: https://github.com/heroku-examples/python-miniconda
https://devcenter.heroku.com/articles/python-c-deps#scientific-python-users