Setting environment variables.

[Oliver White]

I'm writing my first python program...

The program is intended to give a menu of choices, from which the
CVSROOT environment variable is set (I'm sick of swapping around
manually for sucking down code from different places). I'm wondering how
I would do that.

I'm running GNU/Linux, is there an issue with processes... eg, after
running my python program as a child process, will the changes to the
environment variable affect it's parent (the *term)? (suspecting no) Is
there annother way to set the parent's?