Raymond Hettinger a écrit : > [Brian Harring] > >>The issue I'm seeing is that the wart you're pointing at is a >> general issue not limited to strings- everyone sooner or later >> has flattening code that hits the "recursively iterate over >> this container, except for instances of these classes". > > > Good recap. For more info, search comp.lang.python for previous > discussions about a proposed iter_flatten() function. One of the > conclusions was that a general algorithm would need to accept a user > specified test for atomicity so it would know where to recurse and a > where not to (the answer to that is application dependent). > one useful test for that case could be: >>> item in item
This returns True for string-like objects, False for other sane (non infinite) iterables. Anyhow, when it returns True, you most definitely want to stop recursing! Baptiste _______________________________________________ Python-3000 mailing list Python-3000@python.org http://mail.python.org/mailman/listinfo/python-3000 Unsubscribe: http://mail.python.org/mailman/options/python-3000/archive%40mail-archive.com
