How to migrate a python site to another machine?
In case you are using pip for package management, you can easily recreate the virtualenv on another system:
On system1, run pip freeze --local > requirements.txt and copy that file to system2. Over there, create and activate the virtualenv and use pip install -r requirements.txt to install all packages that were installed in the previous virtualenv.
Your python code can be simply copied to the new system; I'd find -name '*.pyc' -delete though since you usually do not want to move compiled code (even if it's just python bytecode) between machines.
I would like to know how to setup a complex python website, that is currently running in production environment, into a local machine for development?
Currently the site uses python combined with Django apps (registration + cms modules) in a virtual environment.