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On 25 September 2016 at 21:18, Guido van Rossum <guido@python.org> wrote:

Be careful though, comparing these to plain integers should probably
be allowed,

There's a good reason why it's "opaque" ... why would you want to make it less opaque?

And I'm curious why Python didn't adopt the fgetpos/fsetpos style that makes the data structure completely opaque (fpos\_t). IIRC, this was added to C when the ANSI standard was first written, to allow cross-platform compatibility in cases where ftell/fseek was difficult (or impossible) to fully implement. Maybe those reasons don't matter any more (e.g., dealing with record-oriented or keyed file systems) ...

and we also should make sure that things like
serialization via JSON or storing in an SQL database don't break. I
personally think it's one of those "learn not to touch the stove"
cases and there's limited value in making this API idiot proof.

On Sun, Sep 25, 2016 at 9:05 PM, Nick Coghlan <ncoghlan@gmail.com> wrote:
\> On 26 September 2016 at 10:21, MRAB <python@mrabarnett.plus.com> wrote:
\>> On 2016-09-26 00:21, Ben Leslie wrote:
\>>> Are there any downsides to this? I've made some progress developing a
\>>> patch to change this functionality. Is it worth polishing and
\>>> submitting?
\>>>
\>> An alternative might be a subclass of int.
\>
\> It could make sense to use a subclass of int that emitted deprecation
\> warnings for integer arithmetic, and then eventually disallowed it
\> entirely.
\>
\> Cheers,
\> Nick.
\>
\> --
\> Nick Coghlan | ncoghlan@gmail.com | Brisbane, Australia
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\--
\--Guido van Rossum (python.org/\~guido)

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