[Import-SIG] PEP 420 issue: extend_path

[Nick Coghlan]

On May 8, 2012 2:21 AM, "Antoine Pitrou" <solipsis at pitrou.net> wrote:
>
> In any case, do note that returning something else than either a loader
> or None already breaks the API, AFAICT. Existing code calling
> find_module() will have to be adapted... Which is perhaps worse than
> the perceived migration problem in PEP 382.

382 would have had the same problem.

Given that sys.path already holds strings, as do __path__ attributes, I
don't see any value in adding a separate PathEntry type just for signalling
purposes.

However, I do think we need to give more thought to allowing old finders to
gracefully degrade by reporting "not found" instead of throwing an error.
Will write more on that when I get to a real computer :)

--
Sent from my phone, thus the relative brevity :)
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