[http://www.ActiveState.com/ ActiveState] offers redistribution contracts for their ActivePython distribution and enterprise an support package called [http://www.activestate.com/PythonDirect PythonDirect].
[http://www.logilab.com/ Logilab] offers support contract for companies developping with Python (and doing scientific stuff)
[http://www.tummy.com/ tummy.com] offers support for Python on Linux, including RPM packaging, hosting, and script development.