[Python-Dev] Unique loader per module

[Barry Warsaw]

On Jan 05, 2018, at 05:12 PM, Nick Coghlan wrote:

>I think the main reason you're seeing a problem here is because
>ResourceReader has currently been designed to be implemented directly
>by loaders, rather than being a subcomponent that you can request
>*from* a loader.
>
>If you instead had an indirection API (that could optionally return
>self in the case of non-shared loaders), you'd keep the current
>resource reader method signatures, but the way you'd access the itself
>would be:
>
>    resources = module.__spec__.loader.get_resource_reader(module)
>    # resources implements the ResourceReader ABC

BTW, just as a quick followup, this API suggestion was brilliant, Nick.  It
solved the problem nicely, and let me add support for ResourceReader to
zipimport with only touching the bare minimum of zipimport.c. :)

https://github.com/python/cpython/pull/5248

Cheers,
-Barry
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