Python equivalent to SharePoint?

[Joe Strout]

We've got a client who has been planning to use SharePoint for  
managing their organization documents, but has recently dropped that  
idea and is looking for an alternative.  Is there any Python package  
with similar functionality?

I confess that I've never used SharePoint myself, and what I know  
about is mainly from these sources:

   http://en.wikipedia.org/wiki/SharePoint
   http://discuss.joelonsoftware.com/default.asp?joel.3.66103.7

I found a reference to CPS, but its developers have dropped the Python  
source to rewrite it in Java.  That's disturbing, and I don't want to  
recommend an abandoned platform.  Anything else I should consider?

Thanks,
- Joe