Not sure if I agree with this ticket, but it appears Django won’t be adding support for removing leading / trailing whitespace from form fields. Other frameworks make this super easy. Hopefully the Django folks will put something together for 1.6+.
I have seen other posts recommending doing the work in the clean method but I find that this runs after any validation. So if you’re doing some regex validation that doesn’t allow leading / trailing spaces for instance, the validation will fail. It’s better to trim the whitespace first, then do the validation to avoid the user having to manually trim the spaces.