using bzr with many small Python modules, forgetful person, and version numbers

[Eric S. Johansson]

short question: How can a forgetful person use bzr to track revisions of 
Python modules and simultaneously update the module version number 
automatically?  (i.e. setup(...,version="1.10",...)) in setup.py)

longer explanation: I have been scratching my head about how to organize 
modules with bzr.  when I develop Python programs, I find myself 
creating small utility modules that stand alone.  These modules are 
typically two or three files in size and rarely larger than five or six 
files.  Originally I started storing them all in one repository/branch. 
  This works okay except for the fact that I find myself forgetting to 
update version numbers.  When I started looking at ways of automatically 
updating the module version number (i.e. version-info --format=python) I 
find myself in a position where bzr appears to be unable to 
differentiate between the individual module versions.  Yes, I am aware 
that there is a difference between the current version of the repository 
and the version of the module.

if the answer is move the modules and make it one module per 
repository/branch, how does one split up an existing repository.

Also a related question, how does one make multiple repositories 
available via the built-in server?

Your guidance is most appreciated.

---eric