[Python-Dev] Planning on removing cache invalidation for file finders

Antoine Pitrou solipsis at pitrou.net
Sun Mar 3 02:16:30 CET 2013

On Sat, 2 Mar 2013 11:16:28 -0500
Brett Cannon <brett at python.org> wrote:
> > In addition, it may be appropriate for importlib to offer a
> > "write_module" method that accepts (module name, target path,
> > contents). This would:
> >
> > 1. Allow in-process caches to be invalidated implicitly and
> > selectively when new modules are created
> I don't think that's necessary. If people don't want to blindly clear all
> caches for a file they can write the file, search the keys in
> sys.path_importer_cache for the longest prefix for the newly created file,
> and then call the invalidate_cache() method on that explicit finder.

That's too complicated for non-import experts IMHO.



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