From Daryl.Tester at iocane.com.au  Mon Mar  6 11:13:47 2006
From: Daryl.Tester at iocane.com.au (Daryl Tester)
Date: Mon, 06 Mar 2006 20:43:47 +1030
Subject: [sapug] Python and Revision Control tagging
Message-ID: <440C0B5B.3070402@iocane.com.au>

A nice little Python idiom I picked up somewhere along the
line.  If you have your Python code under RCS/CVS style
revision control, and you stick the following line in your
module:

__version__ = '$Name: $'[7:-2] or '$Revision: $'[11:-2]

then the symbolic name (1st choice) or revision ID gets
assigned to the __version__ attribute.  The neat part
lies in the string slicing; if a non-symbolic branch is
checked out, then the '$Name: $' portion isn't set by
RCS/CVS, and the [7:-2] portion of the string evaluates
to empty causing the right half of the string to be
evaluated instead.

Well, I thought it was neat.

-- 
Regards,
  Daryl Tester, IOCANE Pty. Ltd.