[Doc-SIG] Does the "is" operator only matter for mutable object?

[Elva Castaneda de Hall]

Hello!
I am not sure how I ended up with a subscription to this virtual  
conversation. I am not even sure where to go to unsubscribe.

Rest assured I have no clue what is being discussed here.  ; > )

Can someone tell me the website URL I can go to unsubscribe?

Thanks, e

On Mar 5, 2011, at 11:12 AM, Laura Creighton wrote:

> In a message of Sat, 05 Mar 2011 09:06:22 PST, Aahz writes:
>> +1 -- here's my rewrite for a bit more clarity:
>>
>> The operators ``is`` and ``is not`` compare whether two objects are
>> really the same object (have the same memory location).  Immutable
>> objects with the same value and type may be cached to the same  
>> object for
>> efficiency.  For example, ``'spam' is 'spam'`` is either ``True`` or
>> ``False`` depending on Python implementation.  Singleton objects
>> (``True``, ``False``, ``None``) are always the same object.
>
> I like Aahz's version.
> Laura
>
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