Classic OOP in Python

[Jason P.]

El miércoles, 17 de junio de 2015, 21:44:51 (UTC+2), Ned Batchelder  escribió:
> On Wednesday, June 17, 2015 at 3:21:32 PM UTC-4, Jason P. wrote:
> > Hello Python community.
> > 
> > I come from a classic background in what refers to OOP. Mostly Java and PHP (> 5.3). I'm used to abstract classes, interfaces, access modifiers and so on.
> > 
> > Don't get me wrong. I know that despite the differences Python is fully object oriented. My point is, do you know any book or resource that explains in deep the pythonic way of doing OOP?
> > 
> > For example, I'm gonna try to develop a modest application from ground up using TDD. If it had been done in Java for instance, I would made extensive use of interfaces to define the boundaries of my system. How would I do something like that in Python?
> > 
> > 
> > Many thanks!
> 
> What other languages do with interfaces, Python does with duck-typing. You
> can build something like interfaces in Python, but many people don't bother.
> 
> I don't know if your project will be web-based, but here is an entire book
> about developing Python web sites with a TDD approach:
> 
> http://www.obeythetestinggoat.com/
> 
> (Don't mind the unusual domain name, it's a bit of an inside joke...)
> 
> TDD and interfaces are separate concepts, and I'm not sure they even
> intersect.  TDD is about writing tests as a way to design the best system,
> and putting testing at the center of your development workflow.  It works
> great with Python even without interfaces.
> 
> --Ned.

I'm aware of duck typing. The point in using interfaces is to be explicit about the boundaries of a system.

Quite a red "Growing Object-Oriented Software, Guided by Tests", by the way. In fact interfaces are key components in the style of building software they propose, in good company with TDD.

Thx!