Heroku Buildpack: Python Django

This is a custom fork of the official Heroku buildpack for Python apps, powered by Pipenv, pip and other excellent software.

Recommended web frameworks include Django and Flask. The recommended webserver is Gunicorn. There are no restrictions around what software can be used (as long as it's pip-installable). Web processes must bind to $PORT, and only the HTTP protocol is permitted for incoming connections.

Some Python packages with obscure C dependencies are not compatible.

See it in Action

Deploying a Python application couldn't be easier:

$ ls
Pipfile		Procfile	web.py

$ heroku create --buildpack https://github.com/VillgeLimited/heroku-buildpack-python-django.git

$ git push heroku master
…
-----> Python app detected
-----> Installing python-3.6.4
-----> Installing pip
-----> Installing requirements with latest pipenv…
       ...
       Installing dependencies from Pipfile…
-----> Discovering process types
       Procfile declares types -> (none)

A Pipfile or requirements.txt must be present at the root of your application's repository.

Specify a Python Runtime

Specific versions of the Python runtime can be specified with a runtime.txt file:

$ cat runtime.txt
python-2.7.14

Or, with a Pipfile.lock (generated from the following Pipfile):

[requires]
python_version = "2.7"

Or, more specifically:

[requires]
python_full_version = "2.7.14"

Runtime options include:

• python-3.6.4
• python-2.7.14
• pypy-5.7.1 (unsupported, experimental)
• pypy3-5.5.1 (unsupported, experimental)

Specify a Django Project

Specific Python requirements.txt file and manage.py files can be specified for a contained Django project within a subfolder by setting the environment variable DJANGO_PROJ

$ export DJANGO_PROJ=myproj