exercism/xpython — pull request #46 by sjakobi (2014-04-15 07:46:26+00:00)
Title: Add zebra-puzzle exercise

I think the main question is whether this answer string is the right "API" for the problem.
Many online ressources on the puzzle instead give a solution matrix like [this one](http://en.wikipedia.org/wiki/Zebra_puzzle#Solution).

Other answer formats are also conceivable: The test code could request a solution for a set of constants that represent the five residents etc.