Links for strait
strait-0.5.1.tar.gz
strait-0.5.0.tar.gz
0.5.0 home_page
http://www.ibm.com/developerworks/linux/library/l-pymeta3.html
http://www.gossamer-threads.com/lists/python/dev/673833
http://docutils.sourceforge.net/
http://www.iam.unibe.ch/~scg/Research/Traits/
https://svn.enthought.com/enthought/wiki/Traits
http://www.python.org/dev/peps/pep-3119/
http://www.artima.com/weblogs/viewpost.jsp?thread=246341
http://docutils.sourceforge.net/rst.html
http://www.artima.com/weblogs/viewpost.jsp?thread=236286
http://www.artima.com/weblogs/viewpost.jsp?thread=236275
http://www.phyast.pitt.edu/~micheles/python/plone-hierarchy.png
http://www.iam.unibe.ch/%7Escg/Archive/Papers/Scha03aTraits.pdf
http://code.activestate.com/recipes/204197/
http://www.sqlalchemy.org/
http://www.cs.utah.edu/plt/publications/aplas06-fff.pdf
http://www.python.org/download/releases/2.2.3/descrintro/#metaclass_examples