[Python-ideas] Introduce collections.Reiterable

[Neil Girdhar]

If someone allows their class to fail the standardized test for
Iterable/Reiterable/Sequence, that class doesn't deserve to be treated as
one.  (Anyone can register their class as a subclass of the ABCs, or more
simply inherit from one.)


On Fri, Sep 20, 2013 at 11:01 PM, Ethan Furman <ethan at stoneleaf.us> wrote:

> On 09/20/2013 05:40 PM, Neil Girdhar wrote:
>
>>
>> [...]  Each test carries with it a set of promises: it contains a promise
>> about the general behavior of
>>
>> the class, and a promise as to what other class methods will be available.
>>
>> [...]  Tests are done using isinstance(), and the presence of a
>> particular ABC means that the test has passed.
>>
>
> So if the test passes, you know you're good.  Those paragraphs said
> nothing about the meaning of a failing test.
>
> --
> ~Ethan~
>
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