On 7/15/2017 7:35 AM, oyster wrote:
as the title says. has @ been used in projects?
@ was added as an operator for the benefit of numpy, which is a hugh
project. I am pretty sure that it is used there, but you can ask on
some numpy list.
--
Terry Jan Reedy
--
https://mail.python.org/mail
sorry, I mean "PEP 465 - A dedicated infix operator for matrix
multiplication" on
https://docs.python.org/3/whatsnew/3.5.html#whatsnew-pep-465
2017-07-15 20:05 GMT+08:00 Matt Wheeler :
> On Sat, 15 Jul 2017, 12:35 oyster, wrote:
>>
>> as the title says. has @ been used in projects?
>
>
> Strictl
On Sat, 15 Jul 2017, 13:49 Christian Heimes, wrote:
> @ is an actual operator in Python. It was added in Python 3.5 as infix
> matrix multiplication operator, e.g.
>
>m3 = m1 @ m2
>
TIL
The operator is defined in PEP 465,
> https://www.python.org/dev/peps/pep-0465/
Perhaps it should also
Chris Angelico wrote:
> On Sat, Jul 15, 2017 at 11:05 PM, Peter Otten <__pete...@web.de> wrote:
>> Matt Wheeler wrote:
>>
as the title says. has @ been used in projects?
>>
>> numpy, probably?
>>
>>> Strictly speaking, @ is not an operator.
>>
>> In other words it's not popular, not even wide
On Sat, Jul 15, 2017 at 11:05 PM, Peter Otten <__pete...@web.de> wrote:
> Matt Wheeler wrote:
>
>>> as the title says. has @ been used in projects?
>
> numpy, probably?
>
>> Strictly speaking, @ is not an operator.
>
> In other words it's not popular, not even widely known.
>
> Compare:
>
> $ pytho
Matt Wheeler wrote:
>> as the title says. has @ been used in projects?
numpy, probably?
> Strictly speaking, @ is not an operator.
In other words it's not popular, not even widely known.
Compare:
$ python3.4 -c '__pete...@web.de'
File "", line 1
__pete...@web.de
^
SyntaxErr
On 2017-07-15 14:05, Matt Wheeler wrote:
> On Sat, 15 Jul 2017, 12:35 oyster, wrote:
>
>> as the title says. has @ been used in projects?
>>
>
> Strictly speaking, @ is not an operator.
> It delimits a decorator statement (in python statements and operations are
> not the same thing).
> However,
On Sat, 15 Jul 2017, 12:35 oyster, wrote:
> as the title says. has @ been used in projects?
>
Strictly speaking, @ is not an operator.
It delimits a decorator statement (in python statements and operations are
not the same thing).
However, to answer the question you actually asked, yes, all the
On Fri, 05 Apr 2013 06:49:14 -0700, Candide Dandide wrote:
> So, could someone please explain what exactly the is operator returns ?
> The official doc says :
>
> The ‘is‘ operator compares the identity of two objects; the id()
> function returns an integer representing its identity (currently
>
On 6 April 2013 03:40, candide wrote:
> Le vendredi 5 avril 2013 16:53:55 UTC+2, Arnaud Delobelle a écrit :
>
>
> >
> > You've fallen victim to the fact that CPython is very quick to collect
> >
> > garbage.
>
>
> OK, I get it but it's a fairly unexpected behavior.
> Thanks for the demonstrative
Le vendredi 5 avril 2013 16:53:55 UTC+2, Arnaud Delobelle a écrit :
>
> You've fallen victim to the fact that CPython is very quick to collect
>
> garbage.
OK, I get it but it's a fairly unexpected behavior.
Thanks for the demonstrative snippet of code and the instructive answer.
--
http
On 5 April 2013 14:49, Candide Dandide wrote:
> Until now, I was quite sure that the is operator acts the same as the id
> builtin function, or, to be more formal, that o1 is o2 to be exactly
> equivalent to id(o1) == id(o2). This equivalence is reported in many books,
> for instance Martelli's
<[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
| What is the notion of equal defined for functions?
Isness. The developers did not see sufficient reason to refine it further
by comparing all the attributes, including the code object. But there has
just been a discussion on pydev
On Mar 10, 11:36 am, Steven D'Aprano <[EMAIL PROTECTED]
cybersource.com.au> wrote:
> On Mon, 10 Mar 2008 07:39:25 -0700, Gary Herron wrote:
> > If either is a surprise, then understand that the "is" operator should
> > probably *never* be used with immutable types.
>
> Mutable or immutable, it make
On Mon, 10 Mar 2008 07:39:25 -0700, Gary Herron wrote:
> If either is a surprise, then understand that the "is" operator should
> probably *never* be used with immutable types.
Carl Banks has already mentioned testing for None with "is". The standard
idiom for using mutable default arguments goe
On Mar 10, 10:39 am, Gary Herron <[EMAIL PROTECTED]> wrote:
> Metal Zong wrote:
>
> > The operator is and is not test for object identity: x is y is true if
> > and only if x and y are the same objects.
>
> > >>> x = 1
>
> > >>> y = 1
>
> > >>> x is y
>
> > True
>
> > Is this right? Why? Thanks.
>
Metal Zong wrote:
>
> The operator is and is not test for object identity: x is y is true if
> and only if x and y are the same objects.
>
>
>
> >>> x = 1
>
> >>> y = 1
>
> >>> x is y
>
> True
>
>
>
> Is this right? Why? Thanks.
>
>
>
Yes that is true, but it's an implementation defined opti
On Mar 10, 9:11 pm, Matt Nordhoff <[EMAIL PROTECTED]> wrote:
> [EMAIL PROTECTED] wrote:
> >> I believe Python automatically creates and caches int objects for 0-256,
> >> so whenever you use them, they refer to the same exact objects. Since
> >> ints are immutable, it doesn't matter.
>
> > One of t
[EMAIL PROTECTED] wrote:
>> I believe Python automatically creates and caches int objects for 0-256,
>> so whenever you use them, they refer to the same exact objects. Since
>> ints are immutable, it doesn't matter.
>
> One of the biggest hits on start-up time, by the way. ;)
Well, the developer
> I believe Python automatically creates and caches int objects for 0-256,
> so whenever you use them, they refer to the same exact objects. Since
> ints are immutable, it doesn't matter.
One of the biggest hits on start-up time, by the way. ;)
--
http://mail.python.org/mailman/listinfo/python-l
Metal Zong wrote:
> The operator is and is not test for object identity: x is y is true if
> and only if x and y are the same objects.
>
x = 1
y = 1
x is y
> True
>
> Is this right? Why? Thanks.
I believe Python automatically creates and caches int objects for 0-256,
so whenever y
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