问题
I'm try to use create a flask web app on Heroku that uses python 3.5, scipy and flask.
It's well known I suppose that Heroku (still) can't install scipy on its platform. I'm wondering if anyone knows how to push a Flask app to Heroku that can use scipy. I know there are buildpacks that exist (like this one https://github.com/kennethreitz/conda-buildpack) but they don't use the version of python I would like and doesn't seem to let gunicorn and flask do there web app thing.
I don't know if that's clear enough so comment if there's anyway I can make it more clear.
回答1:
EDIT I had to make a new buildpack that I will maintain since the one that I had previously was changed and now only supports Python 2.7. Mine supports Python 3.
Here's step by step what you should do.
1) Add this https://github.com/arose13/conda-buildpack.git to your BUILDPACK_URL
2) Create a conda-requirements.txt with all your requirements that you need anaconda to get, here is where you include python version 3 and scipy. This can be done in command-line with...
conda list -e > conda-requirements
3) Order matters in the conda-requirements.txt. It should look like this...
numpy=1.10.1
scipy=0.16.0
4) requirements.txt contains all the requirements that you want pip to install. You can use pip freeze > requirements.txt Just make sure that there's nothing on this list that is on the conda-requirements.txt list.
5) Push to Heroku.
PS: github project example is here https://github.com/arose13/HerokuCondaScipyFlaskApp
来源：https://stackoverflow.com/questions/35104827/deploying-flask-app-using-python-3-5-and-scipy-on-heroku