Dynamically Update Class Definitions?

Is there a way to loop through all instantiated objects and update their classes when a source file changes? I know about Michael Hudson's method (http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/160164), but you have to modify all your classes to subclass AutoReloader. Is there something le

Recompile AST?

Is it possible to recompile the AST generated by compiler.parse, back into code or an executable code object? My aim here is to allow a script to manipulate Python code as elements within a list. However, it doesn't look like the module has any native methods designed to do this. Chris -- http:/