Re: Range type adaptation implemented

On Mon, Sep 24, 2012 at 6:36 PM, Jacob Kaplan-Moss <jacob@jacobian.org> wrote:
> On Mon, Sep 24, 2012 at 11:44 AM, Daniele Varrazzo
> <daniele.varrazzo@gmail.com> wrote:
>> We could return False to any comparison but still it's not like "you
>> cannot do that, mate". Anybody knows an example of unorderable object
>> in Python? Is there anything more appropriate than throwing TypeError?
>
> I'd say take a cue from how Python 3 handles trying to compare disparate types:
>
>     $ python3
>     Python 3.2.2 (default, Feb 23 2012, 12:57:05)
>     [GCC 4.2.1 Compatible Apple Clang 3.1 (tags/Apple/clang-318.0.45)] on darwin
>     >>> {} < []
>     Traceback (most recent call last):
>       File "<stdin>", line 1, in <module>
>     TypeError: unorderable types: dict() < list()
>
> So I'd say TypeError is correct, perhaps with a message like
> "unorderable type: range()" or something.

Good, with an hint about using postgres operators I think it would fit the bill.

Thank you.

-- Daniele