Avi,
Thanks for your comments. You make a good point.
Going back to my original question, and using your slice() example:
middle_by_two = slice(5, 10, 2)
nums = [n for n in range(12)]
q = nums[middle_by_two]
x = id(q)
b = q
y = id(b)
If I assign "b" to "q", then x and y match – they point t
It seems to me that the the entire concept of relying on python's idea of
where an object is stored is just plain dangerous. A most simple example
might be:
>>> a=1
>>> b=1
>>> a is b
True
>>> a=1234
>>> b=1234
>>> a is b
False
Not sure what happens if you manipulate the data re
writes:
> As an example, you can create a named slice such as:
>
> middle_by_two = slice(5, 10, 2)
>
> The above is not in any sense pointing at anything yet.
>From a functional programming point of view this just looks like a
partially applied function, and with this in mind the behaviour to
On 1/13/23 09:06, Stefan Ram wrote:
>"Beautiful is better than ugly." - The Zen of Python
>
>This says nothing. You have to sacrifice something that
>really has /value/!
>
>"[A]esthetics are more important than efficiency." - Donald E. Knuth
[okay, falling for the troll bait]
Th
Bob,
Your examples show a and b separately defined. My example is where the
definition is a=1; b = a. But I'm only interested in arrays. I would not rely
on this for integers, and there's not likely to be any real cost savings there.
Jan 13, 2023, 08:45 by b...@mellowood.ca:
> It seem
On 2023-01-13 16:57:45 +0100, Jen Kris via Python-list wrote:
> Thanks for your comments. You make a good point.
>
> Going back to my original question, and using your slice() example:
>
> middle_by_two = slice(5, 10, 2)
> nums = [n for n in range(12)]
> q = nums[middle_by_two]
> x = id(q)
> b
On 2023-01-13 10:00:01 -0800, Ethan Furman wrote:
> On 1/13/23 09:06, Stefan Ram wrote:
> >"Beautiful is better than ugly." - The Zen of Python
> >
> >This says nothing. You have to sacrifice something that
> >really has /value/!
Time?
Making something beautiful takes time.
> >"
Jen,
This may not be on target but I was wondering about your needs in this
category. Are all your data in a form where all in a cluster are the same
object type, such as floating point?
Python has features designed to allow you to get multiple views on such objects
such as memoryview that can
Jen,
Can a compiler, or spot compiler, always know if something that was a reference
is changed?
Obvious examples may be if a change happens in non-deterministic ways such as
in a fork chosen at random or from user input but also sometimes levels of
indirection such as deleting an object
Axel and others,
I can appreciate the comparison to a partially applied function but not in
this case. Not that it matters, but this example is more like creating an
object in something like machine learning and initializing parameters
without adding data. Only when you ad data and call upon some
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