[XML-SIG] Python package name

[Guido van Rossum]

>  > Here's another half-baked idea about versions: perhaps packages could
>  > have a __version__.py file?
> 
>   Why not __version__, that just contains the version number?

__version__.py has less of a chance of getting lost when moving or
copying files.  It can be consulted by Python code by simply saying

  import package
  if package.__version__.version <= (1, 2, 3): ...

We may restrict the contents of __version__.py for the purpose of
parsing or evaluating by a version dependency checker.

--Guido van Rossum (home page: http://www.pythonlabs.com/~guido/)