[Python-Dev] Adding NewType() to PEP 484 (original) (raw)

Guido van Rossum gvanrossum at gmail.com
Fri May 27 19:01:11 EDT 2016

Also -- the most important thing. :-) What to call these things? We're pretty much settled on the semantics and how to create them (A = NewType('A', int)) but what should we call types like A when we're talking about them? "New types" sounds awkward.

On Fri, May 27, 2016 at 12:54 PM, Guido van Rossum <gvanrossum at gmail.com> wrote:

Sorry, this is more meant to be the start of a discussion about the proposed feature. And typing.py has its own upstream repo (like asyncio).

--Guido (mobile) On May 27, 2016 12:52 PM, "Brett Cannon" <brett at python.org> wrote:

Patches to Python's stdlib should go through bugs.python.org so it isn't lost in email.

On Fri, May 27, 2016, 12:00 Ivan Levkivskyi <levkivskyi at gmail.com> wrote: Hi, It has been proposed to enhance the typing module with a NewType function that allows to define simple unique types with almost zero runtime overhead. The PR containing actual implementation and PEP 484 update is here: https://github.com/python/typing/pull/226 Review comments are very welcome. Best regards, Ivan

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