On 19/03/2008, Phillip J. Eby <[EMAIL PROTECTED]> wrote: > So that future PEP 302 importers can define support for these > features, please use > pkgutil.simplegeneric to implement these, following the pattern set > out by other pkgutil functions. E.g.: > > def resource_listdir(package, resource_name): > return loader_listdir(get_loader(package), package, resource_name) > > Where 'loader_listdir' is a simplegeneric with default handlers > registered for the built-in/stdlib loader types (zipimporter, None, > and ImpLoader). > > If you do this, then new importer/loader types can use > loader_listdir.register() to support the functionality, without > monkeypatching or other hacks.
If I did this, I'd certainly make sure it was possible for other loaders to add their own implementations. But I'm not sure I want to get involved in the generic-function politics involved in using pkgutil.simplegeneric - particularly as it's undocumented. I may just go for a simple registry of implementation classes. Sorry, but if you couldn't get sufficient agreement to simplegeneric to get it in a "proper" location, I doubt I'd fare better, (Of course, if Guido pipes up with support for using simplegeneric, I'll go with that - and document it, and propose that it gets moved to a sensible location. But I don't want to be the one to try to persuade Guido...) Paul _______________________________________________ Distutils-SIG maillist - Distutils-SIG@python.org http://mail.python.org/mailman/listinfo/distutils-sig
