It sounds to me like the closest thing to what you want is a library for Object Prevalence <http://en.wikipedia.org/wiki/Object_prevalence> http://en.wikipedia.

It sounds to me like the closest thing to what you want is a library for Object Prevalence <http://en.wikipedia.org/wiki/Object_prevalence> http://en.wikipedia.org/wiki/Object_prevalence>. There is one that I know of for Python called Pypersyst <http://pypersyst.org/> http://pypersyst.org/>. There is also an IBM DeveloperWorks article about this library by one of the authors, as well <http://www.ibm.com/developerworks/library/l-pypers.html> http://www.ibm.com/developerworks/library/l-pypers.html>. Hope that helps :)