On Thu, 29 Aug 2013 09:40:32 -0300, Joe Junior wrote: > Well, the main reason for me asking this question here was because of > the Java/C#/Whatever developer in me craving for an Interface for the > container's items, and I noticed that I'm not alone in this. But I was > actually expecting the "We're all consenting adults, here", I guess I > just needed the confirmation :-) > > Another reason for this question is that I read some people saying they > wouldn't use python for large projects, and they always point at the > lack of Interfaces as a concern. I actually disagree, but I can see > their point. What do you think?
Interfaces aren't a built-in part of the language, but big frameworks like Zope and Twisted include them. See for example discussion here: http://dirtsimple.org/2004/12/python-interfaces-are-not-java.html In a more ad-hoc manner, there are recipes for interface-like functionality. For example, from the Python Cookbook, we have this: http://code.activestate.com/recipes/52291 It's a myth that Python is entirely opposed to type-checking. Many built- ins do it. Way back in Python 1.5, Python's creator Guido van Rossum wrote an essay describing a way to implement Eiffel-like pre- and post- condition checking: http://www.python.org/doc/essays/metaclasses/ These days, it would be relatively simple to implement pre- and post- condition checking using decorators, and indeed one of the motivating use- cases for function annotations in Python 3 is to allow such things. http://www.python.org/dev/peps/pep-3107/ (Function annotations are perhaps the best Python feature that nobody uses.) -- Steven -- http://mail.python.org/mailman/listinfo/python-list
