[Import-SIG] PEP 420: Implicit Namespace Packages

Barry Warsaw barry at python.org
Wed May 2 20:50:05 CEST 2012

On May 02, 2012, at 08:32 PM, Martin v. Löwis wrote:

>Both, actually. I had expected that new API (i.e. a new method of some kind)
>would be necessary, so it has elegance that this is not required.  OTOH,
>explicit type checking is despised in the OO world, and varying result types
>are disliked by Guido van Rossum (not sure whether this reservation applies
>to this case as well, or only to cases where the return type depends on the
>parameter types).

My understanding (and I'm sure Guido will correct me if I'm wrong) is that
it's the latter: return type should not depend on function argument values.


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