A colleague is looking to generate UML class diagrams from heaps of Python source code. 
He's primarily interested in the inheritance relationships, and mildly interested in compositional relationships, and doesn't care much about class attributes that are just Python primitives.
The source code is pretty straightforward and not tremendously evil--it doesn't do any fancy metaclass magic, for example.  (It's mostly from the days of Python 1.5.2, with some sprinklings of "modern" 2.3ish stuff.)  
What's the best existing solution to recommend?
Umbrello does that too. in the menu go to Code -> import project and then point to the root deirectory of your project. then it reverses the code for ya...
What's the best way to generate a UML diagram from Python source code?