Dia+Python from the command line? (was: does Dia have a Python script interface?)

["W. Martin Borgert" <debacle debian org>]

Quoting "Carlo Calderoni" <calderoni carlo gmail com>:
> You can write python scripts and  put them in "~/.dia/python" directory. You
> can call them via dia python console or map them in dia menu entries.

Btw, is there a way to execute a Python plugin from the command line?
Assume, I have a diagram showing the structure of a local network,
and all servers have their name in the diagram. A Python script
could extract the names and list them, for example. Is it possible
to do that without using the Dia GUI? TIA.