On 2016-02-22, Chris Angelico <ros...@gmail.com> wrote: > On Tue, Feb 23, 2016 at 5:17 AM, Jon Ribbens ><jon+use...@unequivocal.co.uk> wrote: >> Weeeeeell, I have a lot of sympathy for that point, but on the other >> hand the whole concept of UUIDs ("import uuid") is predicated on the >> opposite assumption. > > Not quite opposite. Ethan is asserting that you cannot be *certain* > without actually checking the FS; the point of UUIDs is that you can > be fairly *confident* that there won't be a collision. There is a > nonzero probability of accidental collisions, and if an attacker is > deliberately trying to _force_ a collision, it's most definitely > possible. So both views are correct.
I was under the impression that the point of UUIDs is that you can be *so* confident that there won't be a collision that for all practical purposes it's indistinguishable from being certain. -- https://mail.python.org/mailman/listinfo/python-list