[Python-Dev] Expose Subversion revision number to Python

["Martin v. Löwis"]

John Pinner wrote:
> It's also the only thing that identifes the revision/build precisely,
> allowing reversion to a known state.

How so?
- It doesn't identify a build precisely: you may have dynamically-loaded
  modules that get rebuild even though the build number doesn't change.
  So a single build number may refer to different sets of code.
- it doesn't allow reversion to a known state: I can't even find a
  meaningful interpretation of such a claim. How would the build allow
  to revert anything? And what is that anything that it would allow to
  revert? Reverting doesn't work for source changes, nor for configure
  options (svn revert allows to do the former, in a limited way; svk
  allows that in a broader way).

Regards,
Martin