On Thu, 2 Nov 2023 at 08:52, Grant Edwards via Python-list <python-list@python.org> wrote: > > On 2023-11-01, Chris Angelico via Python-list <python-list@python.org> wrote: > > On Thu, 2 Nov 2023 at 08:09, Grant Edwards via Python-list > ><python-list@python.org> wrote: > > >> Make sure it has an '@' in it. Possibly require at least one '.' > >> after the '@'. > > > > No guarantee that there'll be a dot after the at. > > Ah, I forgot about defaulting to a local domain if one is > omitted. Will MTAs do that these days?
Yeah they will; but that'll depend on the exact server you send to, whereas if you have a domain part, all you need is some server that accepts mail for forwarding. > > (Technically there's no guarantee of an at sign either, but email > > addresses without at signs are local-only, so in many contexts, you > > can assume there needs to be an at.) > > > > So the regex to match all valid email addresses that aren't > > local-only is... drumroll please... > > > > r"@" > > Unless you want to support UUCP or X400 addresses... > > :) Yyyyyyyyeah I think we can assume SMTP these days :) ChrisA -- https://mail.python.org/mailman/listinfo/python-list
