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

Raymond Hettinger raymond.hettinger at gmail.com
Sun Dec 10 17:00:56 EST 2017

On Dec 10, 2017, at 1:37 PM, Eric V. Smith <eric at trueblade.com> wrote:

On 12/10/2017 4:29 PM, Ivan Levkivskyi wrote: On 10 December 2017 at 22:24, Raymond Hettinger <raymond.hettinger at gmail.com<mailto:raymond.hettinger at gmail.com>> wrote: Without typing (only the first currently works): Point = namedtuple('Point', ['x', 'y', 'z']) # underlying store is a tuple Point = makedataclass('Point', ['x', 'y', 'z']) # underlying store is an instance dict Hm, I think this is a bug in implementation. The second form should also work. Agreed. I have a bunch of pending changes for dataclasses. I'll add this. Eric.

Thanks Eric and Ivan. You're both very responsive. I appreciate the enormous efforts you're putting in to getting this right.

I suggest two other fix-ups:

  1. Let make_dataclass() pass through keyword arguments to _process_class(), so that this will work:

    Point = make_dataclass('Point', ['x', 'y', 'z'], order=True)

  2. Change the default value for "hash" from "None" to "False". This might take a little effort because there is currently an oddity where setting hash=False causes it to be hashable. I'm pretty sure this wasn't intended ;-)

Raymond

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