[Python-Dev] PEP 557 Data Classes 5th posting

[Eric V. Smith]

Me, either. So I'm going to leave it as a tuple. Unless I find something 
while reviewing it tonight, I'm done.

Eric.

On 12/3/2017 3:02 PM, Guido van Rossum wrote:
> On second thought I don't care that much.
> 
> On Dec 3, 2017 9:07 AM, "Eric V. Smith" <eric at trueblade.com 
> <mailto:eric at trueblade.com>> wrote:
> 
>     On 12/3/2017 11:56 AM, Guido van Rossum wrote:
> 
>         Not sure I like that better. It's an open-ended sequence of
>         homogeneous types. What's the advantage of a tuple? I don't want
>         to blindly follow existing APIs.
> 
> 
>     So people don't modify it, but consenting adults would say "don't do
>     that". I currently return a new tuple in each call to fields(), but
>     in the future I might return the same one every time (per class).
> 
>     I really don't care so much. The only reason I made any change was
>     because the implementation was returning an OrderedDict, so I was
>     changing the tests anyway. I'm happy to change it back to a list,
>     based on the convention of homogeneous types being in a list.
> 
>     Eric.
> 
> 
>         On Sun, Dec 3, 2017 at 6:55 AM, Eric V. Smith
>         <eric at trueblade.com <mailto:eric at trueblade.com>
>         <mailto:eric at trueblade.com <mailto:eric at trueblade.com>>> wrote:
> 
>              I've made a minor change: the return type of fields() is now a
>              tuple, it was a list.
> 
>              Eric.
> 
>              On 12/2/2017 9:02 AM, Eric V. Smith wrote:
> 
>                  I've pushed another version of PEP 557. The only
>         difference is
>                  changing the default value of "order" to False instead
>         of True.
>                  This matches regular classes: instances can be tested for
>                  equality, but are unordered.
> 
>                  Discussion at
>         https://github.com/ericvsmith/dataclasses/issues/104
>         <https://github.com/ericvsmith/dataclasses/issues/104>
>                  <https://github.com/ericvsmith/dataclasses/issues/104
>         <https://github.com/ericvsmith/dataclasses/issues/104>>
> 
>                  It's already available at
>         https://www.python.org/dev/peps/pep-0557/
>         <https://www.python.org/dev/peps/pep-0557/>
>                  <https://www.python.org/dev/peps/pep-0557/
>         <https://www.python.org/dev/peps/pep-0557/>>
> 
>                  I've updated the implementation on PyPI to reflect this
>         change:
>         https://pypi.python.org/pypi/dataclasses/0.3
>         <https://pypi.python.org/pypi/dataclasses/0.3>
>                  <https://pypi.python.org/pypi/dataclasses/0.3
>         <https://pypi.python.org/pypi/dataclasses/0.3>>
> 
>                  Eric.
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> 
>         -- 
>         --Guido van Rossum (python.org/~guido
>         <http://python.org/%7Eguido> <http://python.org/%7Eguido>)
> 
>