How to deploy a python webapp with dependencies using virtualenv?

Question

I'm looking for a way to automate deployment of web applications written in Python to a server. I would like to use virtualenv to have a clean environment for this application.

However, I am wondering how to manage dependencies when deploying to the server ?

In development, I have a virtualenv in which I install external libraries using pip, so I am looking for a way to automatically install those dependencies in production ?

Thank you for your time

Answer 1

With pip you can create a requirements file:

$ pip freeze > requirements.txt

Then in the server to install all of these you do:

$ pip install -r requirements.txt

And with this (if the server has everything necessary to build the binary packages that you might have included) all is ready.