Python equivalent of static member data?

[Roger H]

I've just gotten done digging through the docs for 1.5.2,
and did not find an answer to my question:  Is there a
Python equivalent to the C++ concept of static member
data?  I'd like to make a class, and have each instance
of that class share a variable and its associated value.
Each instance would have the ability to modify that value,
and the new value would be updated through all instances.

Make sense?

~Roger the Shrubber~