On Sat, Nov 10, 2012 at 1:01 AM, Andriy Kornatskyy <andriy.kornats...@live.com> wrote: > > 1. In looks-like we check features of Foo (that may be superset) of what IFoo > offers. > > assert looks(Foo).like(IFoo) > > 2. We can check if Foo is limited to IFoo only: > > assert looks(IFoo).like(Foo) > > So it valid to have both asserts.
You'll almost never need #2, but since there's no difference between a "class" and an "interface", it's perfectly legal to switch them around. But I would generally expect that unrecognized methods are never a problem (assuming they don't collide with anything) - that, as in Steven's example, it's fine to have an actor who can sing when you don't need her to. When you post job openings, you don't normally ask for someone with "5+ years Python experience and unable to program in REXX" [1]. You're checking for a minimum set of requirements. [1] Though I suppose you might ask for someone who's unable to program in Pascal. Might save you some hassle. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
