On Sep 23, 1:58 pm, Robert Lehmann <[EMAIL PROTECTED]> wrote: > I don't see why transitivity should apply to Python objects in general.
Hmmm. Lack of transitivity does produce some, um, interesting results when playing with sets and dicts. Here are sets s and t such that the unions s | t and t | s have different sizes: >>> from decimal import Decimal >>> s = set([Decimal(2), 2.0]) >>> t = set([2]) >>> len(s | t) 2 >>> len(t | s) 1 This opens up some wonderful possibilities for hard-to-find bugs... Mark -- http://mail.python.org/mailman/listinfo/python-list
