[Python-Dev] IronPython specific code in inspect module

[Sebastien Binet]

On Wednesday 20 May 2009 13:54:56 David Stanek wrote:
> On Wed, May 20, 2009 at 7:13 AM, Doug Hellmann <doug.hellmann at gmail.com> 
wrote:
> > On May 19, 2009, at 10:21 PM, David Stanek wrote:
> >> It seems that using a technique similar to dependency injection could
> >> provide some value. DI allows implementations conforming to some
> >> interface to be injected into a running application without the messy
> >> construction logic. The simple construction-by-hand pattern is to
> >> create the dependencies and pass them into the dependent objects.
> >> Frameworks build on top of this to allow the dependencies to be wired
> >> together without having any construction logic in code, like switch
> >> statements, to do the wiring.
> >>
> >> I think a similar pattern could be used in the standard library. When
> >> the interpreter goes through its normal bootstrapping process in can
> >> just execute a module provided by the vendor that specifies the
> >> platform specific implementations. Some defaults can be provided since
> >> Python already has a bunch of platform specific implementations.
> >>
> >> An over simplified design to make this happen may look like:
> >> 1. Create a simple configuration that allows a mapping of interfaces
> >> to implementations. This is where the vendor would say when using
> >> inspect you really should be using cli.inspect.
> >
> > That sounds like a plugin and the "strategy" pattern.  Tarek is doing
> > some work on providing a standard plugin mechanism as part of the work
> > he's doing on distutils, isn't he?
>
> Basically yes. What I proposed is more like a service locator with a
> pinch of DI. Where can I learn more about what Tarek is working on? Is
> there a branch somewhere?

it is here:
 http://wiki.python.org/moin/Distutils/PluginSystem
and there:
 http://pypi.python.org/pypi/extensions

cheers,
sebastien.
-- 
#########################################
# Dr. Sebastien Binet
# Laboratoire de l'Accelerateur Lineaire
# Universite Paris-Sud XI
# Batiment 200
# 91898 Orsay
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