why () is () and [] is [] work in other way?

[Thomas Rachel]

Am 24.04.2012 08:02 schrieb rusi:
> On Apr 23, 9:34 am, Steven D'Aprano<steve
> +comp.lang.pyt... at pearwood.info>  wrote:
>
>> "is" is never ill-defined. "is" always, without exception, returns True
>> if the two operands are the same object, and False if they are not. This
>> is literally the simplest operator in Python.
>
> Circular definition: In case you did not notice, 'is' and 'are' are
> (or is it is?) the same verb.

Steven's definition tries not to define the "verb" "is", but it defines 
the meanung of the *operator* 'is'.

He says that 'a is b' iff a and be are *the same objects*. We don't need 
to define the verb "to be", but the target of the definition is the 
entity "object" and its identity.


Thomas