[Python-Dev] Is static typing still optional? (original) (raw)

Chris Barker chris.barker at noaa.gov
Tue Dec 26 13:49:53 EST 2017

On Sat, Dec 23, 2017 at 5:54 PM, Nick Coghlan <ncoghlan at gmail.com> wrote:

I still wonder about the "fields must be annotated" constraint though. I can understand a constraint that the style be consistent (i.e. all fields as annotations, or all fields as field instances), since that's needed to determine the field order, but I don't see the problem with the "no annotations" style otherwise.

IIUC, without annotations, there is no way to set a field with no default.

And supporting both approaches violates "only one way to do it" in, I think, a confusing manner -- particularly if you can't mix and match them.

Also, could does using class attributes without annotations make a mess when subclassing? -- no I haven't thought that out yet.

-CHB

Cheers, Nick.

--

Christopher Barker, Ph.D. Oceanographer

Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception

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