On Tue, 2010-02-16 at 16:14 +0100, Paul Kölle wrote: > Am 15.02.2010 23:12, schrieb Florian Ludwig: > > On Sun, 2010-02-14 at 18:47 +0100, Diez B. Roggisch wrote: > >> [...] > >> And then of course, this is not really needed. In Python, behavior > >> counts, not type-information. So you can get away without any > >> explicit > >> declared interface. You might chose to not do that, for aestetic > >> reasons, or better documentation. But you aren't forced. > > > > Actually some plugin-systems in python do force you and they check > > if your "implementation" comply with the "interface".
> Which is a good thing IMO ;) Type checking might be good but not pythonic - imo. The problem with having interfaces needed to be declared (and therefore the possibility to check) is as I outlined in my first mail: Where to put those interface descriptions if you want both sides pluggable? You probably end up depending on other modules/projects just to import the interfaces. > > Here is one solution I came up with. > [...] > Can you post working code? It's not clear what "pbus" is and how it > works. Oh, sorry. The idea is similar to "d-bus" - hence the name. Its "the communcation system". The code is pretty simple and quick. Please remember its just to show of the concept not to use it in any production software or anything. Instead of using classes as connecting-piece I thought using strings (maybe path "/plugin/wiki" or "org.example.wiki") might solve my problem. It might be possible to add optional interface validation though. pbus.py - just a simple concept implementation of a framework http://dpaste.com/hold/159980/ auth_openid.py - providing the authentication service http://dpaste.com/hold/159619/ wiki.py - providing the wiki http://dpaste.com/hold/159634/ Now putting both together: > import pbus > > import wiki > import auth_openid > # or: import auth_shibboleth > > pbus.get("wiki").run() -- Florian Ludwig <d...@phidev.org>
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