Alex Martelli wrote: > <[EMAIL PROTECTED]> wrote: > > >>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 less intrusive (visitor pattern?) that you can use like >>update(old_class, new_class) to automagically do the work? > > > If you're in no hurry, you COULD loop over all of gc.get_objects(), > identify all those which are instances of old_class and "somehow" change > their classes to new_class -- of course, x.__class__ = new_class may > well not be sufficient, in which case you'll have to pass to update a > callable to do the instance-per-instance job.
Couldn't I just loop over gc.get_referrers(cls), checking for instances of the class object? Since class instances refer to their class, the gc seems to be doing the exact same thing as Hudson's fancy metaclass. Or am I missing something? Chris -- http://mail.python.org/mailman/listinfo/python-list
