Using Hudson variables in Python

While moving my continuous integration build script to Python (using Python Plugin for Hudson), I faced a problem of using Hudson environment variables. I am new to Python and get used just to place variables in shell script like $WORKSPACE or ${WORKSPACE}. Still, it didn't work in case of Python. So, if you met such a problem, you should use os.eviron() method. For example:

#!/usr/bin/python

import os

workspace = os.environ['WORKSPACE']
print workspace