Paddy McCarthy <[EMAIL PROTECTED]> added the comment: Hi Georg, A bit of relevant background about me: I've been interested in Duck Typing _specifically_ for a couple of years when I started watching edits to it on Wikipedia. I researched the history of the use of the term and changed the attribution of first use to Alex Martelli after digging in Google, and still trawl reading code and articles on the subject. But I DONT think this makes me an expert - Duck typing is a 'mould-able' term and the things we write about it help to define it.
On your comment about hasattr: I think more and more that Duck-Typing is what allows us, (as in Python), to substitute one class for another in a method previously designed with only the other in mind - you know, as in the canonical example of file-like objects such as StringIO substituting in methods defined originally for files. In this case hasattr checks don't add anything, and EAFP is all important. I tried to get wider context on this by posting it originally to comp.lang.python but no one was interested. I don't normally frequent the developers forumbut maybe we should open the issue to that audience? - Paddy. _______________________________________ Python tracker <[EMAIL PROTECTED]> <http://bugs.python.org/issue3214> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
