> Thus, my argument is that an adapter like this should never be made part > of > the adapter system, even if there's no transitivity. However, if you > agree > that such an adapter shouldn't be implicit, then it logically follows that > there is no problem with allowing transitivity, except of course that > people may sometimes break the rule.
At some point, the PEP should be extended to include a list of best practices and anti-patterns for using adapters. I don't find issues of transitivity and implicit conversion to be immediately obvious. Also, it is not clear to me how or if existing manual adaption practices should change. For example, if I need a file-like interface to a string, I currently wrap it with StringIO. How will that change it the future? By an explicit adapt/conform pair? Or by strings knowing how to conform to file-like requests? Raymond Hettinger _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
