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A mathematician is a device for turning coffee into theorems. -- P. Erdos

copy.copy

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https://www.novabbs.com/devel/article-flat.php?id=16162&group=comp.lang.python#16162

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Date: Mon, 22 Nov 2021 15:39:23 +0100
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by: ast - Mon, 22 Nov 2021 14:39 UTC

Hi,

>>> a = 6
>>> b = 6
>>> a is b
True

ok, we all know that Python creates a sole instance
with small integers, but:

>>> import copy
>>> b = copy.copy(a)
>>> a is b
True

I was expecting False

Re: copy.copy

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copy mid

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From: jon+use...@unequivocal.eu (Jon Ribbens)
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Subject: Re: copy.copy
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by: Jon Ribbens - Mon, 22 Nov 2021 15:02 UTC

On 2021-11-22, ast <ast@invalid> wrote:
> Hi,
>
> >>> a = 6
> >>> b = 6
> >>> a is b
> True
>
> ok, we all know that Python creates a sole instance
> with small integers, but:
>
> >>> import copy
> >>> b = copy.copy(a)
> >>> a is b
> True
>
> I was expecting False

Why did you expect False?

For immutable types, copy(foo) just returns foo.

Re: copy.copy

<619bb765$0$8916$426a34cc@news.free.fr>

copy mid

https://www.novabbs.com/devel/article-flat.php?id=16164&group=comp.lang.python#16164

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Date: Mon, 22 Nov 2021 16:29:41 +0100
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by: ast - Mon, 22 Nov 2021 15:29 UTC

Le 22/11/2021 à 16:02, Jon Ribbens a écrit :
> On 2021-11-22, ast <ast@invalid> wrote:

>
> For immutable types, copy(foo) just returns foo.
>

ok, thx

Subject	Author
copy.copy	ast
Re: copy.copy	Jon Ribbens
Re: copy.copy	ast

A mathematician is a device for turning coffee into theorems. -- P. Erdos

devel / comp.lang.python / copy.copy