Getting a class from its name

[Jeremy Yallop]

* Henrik Motakef
| I guess thats an easy one, but somehow I'm blocked.
| How do I get a class given its name (or an object of this class
| ultimatly)?
| 
| Say I have the string "xml.dom.Node", how do I use it to make a Node
| object?

The addresses this problem for functions.  The principles are the
same.

  http://www.python.org/cgi-bin/faqw.py?req=show&file=faq04.103.htp

Jeremy.