On 03/06/2015 17:36, Michael Torrie wrote:
On 06/03/2015 10:00 AM, BartC wrote:
The others all give True in all cases. It seems that older Python
versions have a purer object model.
No. It's just an under-the-hood optimization that the interpreter is
making. It's an implementation detail that you should never rely on.
It says nothing about the purity of the object model. Immutable objects
can be optimized ("interred" is the word often used) by reusing the same
object over and over when the interpreter can.
But (-12 is -12) yielding False was being used to illustrate why Value
and Object didn't mean the same thing.
Are they in fact the same, or is there something else that can be done
more reliably to show the difference?
(However, I feel the internal representation of values shouldn't matter.
Each type of value will have its own documented behaviour.)
--
Bartc
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