I'm starting to upgrade an existing Django application form python2 to python3, and also moving to develop on a mac rather than linux.

Virtual Env

In order to create a virtualenv with python 3 (and 2) in it, use the following command:

$ virtualenv -p python3 env_name

You can then install libraries as normal using

$ pip install Django

And once you've installed libraries you can freeze their versions into a _requirements.txt file using the following command:

$ pip freeze > requirements.txt

You can then run this file elsewhere using

$ pip install -r requirements.txt

Postgis

To install the postgres support for GeoDjango, we must use homebrew to install the following packages

$ brew install postgis
$ brew install gdal
$ brew install libgeoip

References

• https://stackoverflow.com/questions/23842713/using-python-3-in-virtualenv