On Sep 7, 7:03 am, Steven D'Aprano <[EMAIL PROTECTED] cybersource.com.au> wrote: > I have an application that will be producing many instances, using them > for a while, then tossing them away, and I want each one to have a unique > identifier that won't be re-used for the lifetime of the Python session. > > I can't use the id() of the object, because that is only guaranteed to be > unique during the lifetime of the object. > > For my application, it doesn't matter if the ids are predictable, so I > could do something as simple as this: > > def unique_id(): > n = 1234567890 > while True: > yield n > n += 1 > > unique_id = unique_id() > > while Application_Is_Running: > make_an_object(id=unique_id()) > do_stuff_with_objects() > delete_some_of_them() > > which is easy enough, but I thought I'd check if there was an existing > solution in the standard library that I missed. Also, for other > applications, I might want them to be rather less predictable. > > -- > Steven.
You could always use the md5 module along with time.time() to generate a unique id. Mike -- http://mail.python.org/mailman/listinfo/python-list
