On Jun 18, 3:55 pm, Christoph Groth <c...@falma.de> wrote: > Bruno Desthuilliers <bruno.42.desthuilli...@websiteburo.invalid> writes: > > Anyway: the simplest solution here is to replace the call to your Base > > class with a call to a factory function. I'd probably go for something > > like (Q&D untested code and other usual warnings) : > > > (...) > > Yeah, that will do what I want. > > My confusion arose from the expectation that there had to be some > mechanism to do the conversion automatically. But actually a simple > > def bar(arg): > if not isinstance(arg, Base): > arg = Base(arg) > # Do something with arg. > > is a simple and explicit solution of the problem.
What if someone wants to call bar with an argument that mimics a Base but isn't a subclass? Your function would try to convert it to an actual Base. Something to think about before you make a habit of this. Carl Banks -- http://mail.python.org/mailman/listinfo/python-list
