Importing different versions of a module

[henning.vonbargen at arcor.de]

Why not set up PYTHONPATH together with other environment variables in
a shell script (bash, or CMD on Windows) and call that shell script
instead of your Python script directly?

This is probably the easiest and still a very powerful and generic
solution for this kind of problem. We do it that way regardless of the
programming language used.

Henning