Chris Jerdonek added the comment:

Senthil, in my experience, whenever documentation is added that documents new 
aspects of behavior (e.g. is not just a rewording of existing documentation), 
tests are always added simultaneously (if not already present) to ensure that 
the code doesn't regress against the new documentation.
Todd, DRY means "don't repeat yourself."  You can look it up on Wikipedia, etc. 
 Identical chunks of code are repeated several times which make it harder for 
others to see how the test cases differ from each other (as well as making the 
code harder to maintain).

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue16278>
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