Are the following two expressions the same?
x is y
Id(x) == id(y)
?
I ported some Java code to Python, and it was using Java's idea of
equality (via ==) in some places. Right now, I have a suite of unit
tests working using the second expression above, but I'm thinking
about switching to the fi
On 2014-10-27 00:12, Dan Stromberg wrote:
Are the following two expressions the same?
x is y
Id(x) == id(y)
?
Yes.
I ported some Java code to Python, and it was using Java's idea of
equality (via ==) in some places. Right now, I have a suite of unit
tests working using the second expressi
On 27 October 2014 00:12, Dan Stromberg wrote:
> Are the following two expressions the same?
>
> x is y
>
> Id(x) == id(y)
Much of the time, but not all the time. The obvious exception is if
"id" is redefined, but that one's kind of boring. The real thing to
watch out for is if the object that "x
On 10/26/2014 05:23 PM, Ethan Furman wrote:
On 10/26/2014 05:12 PM, Dan Stromberg wrote:
Are the following two expressions the same?
x is y
Id(x) == id(y)
?
Listen to MRAB, ignore me.
That is all.
--
~Ethan~
--
https://mail.python.org/mailman/listinfo/python-list
On 10/26/2014 05:12 PM, Dan Stromberg wrote:
Are the following two expressions the same?
x is y
Id(x) == id(y)
?
Nope. If the value if `id(x)` is not interned, then the two value could be different objects that still represent the
same value.
--
~Ethan~
--
https://mail.python.org/mailman
On 2014-10-27 00:24, Ethan Furman wrote:
On 10/26/2014 05:23 PM, Ethan Furman wrote:
On 10/26/2014 05:12 PM, Dan Stromberg wrote:
Are the following two expressions the same?
x is y
Id(x) == id(y)
?
Listen to MRAB, ignore me.
That is all.
Well, apart of Joshua's qualifications, that is!
Dan Stromberg writes:
> Are the following two expressions the same?
>
> x is y
>
> Id(x) == id(y)
It depends what you mean by “the same”.
Do they give the same result? Sometimes yes, sometimes no. It depends on
what the types of the values are.
Do they express the same intent? Always no. The f
On Sun, 26 Oct 2014 17:12:29 -0700, Dan Stromberg wrote:
> Are the following two expressions the same?
>
> x is y
>
> Id(x) == id(y)
No, although if "Id" and "id" were the same function, they might be
equivalent in some cases.
--
Denis McMahon, denismfmcma...@gmail.com
--
https://mail.pyth
On 27Oct2014 00:41, MRAB wrote:
On 2014-10-27 00:24, Ethan Furman wrote:
On 10/26/2014 05:23 PM, Ethan Furman wrote:
On 10/26/2014 05:12 PM, Dan Stromberg wrote:
Are the following two expressions the same?
x is y
Id(x) == id(y)
?
Listen to MRAB, ignore me.
That is all.
Well, apart of J
Ben Finney writes:
> Dan Stromberg writes:
> > Are the following two expressions the same?
[…]
>
> It depends what you mean by “the same”.
My apologies, I mis-read the question. My answers were for a different
question (one you didn't ask). Please ignore that.
--
\ “If you ever reach to
In article ,
Cameron Simpson wrote:
> The "is" test is more direct and less subject to iffiness because the longer
> expression using id() leaves more scope/time for things to change, and of
> course "id" itself can be rebound to something weird.
Not to mention that Python is case-sensitive a
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