Groups > comp.lang.python > #196984

Re: Two aces up Python's sleeve (Posting On Python-List Prohibited)

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From	dn <PythonList@DancesWithMice.info>
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Subject	Re: Two aces up Python's sleeve (Posting On Python-List Prohibited)
Date	Sat, 9 Nov 2024 08:09:49 +1300
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On 8/11/24 14:40, Mild Shock via Python-list wrote:
> Well you can use your Browser, since
> JavaScript understand post and pre increment:

Question: are we talking Python or JavaScript?

> So we have x ++ equals in Python:

Trying to find a word-for-word translation serves as badly in 
computer-programming languages as it does in human spoken-languages. 
Learn how to adapt and embrace the differences...

>      x + = 1
>      x - 1

The above probably only 'works' (the way you expect) in the REPL.

> But I don't know how to combine an
> assignment and an expression into one
> expession. In JavaScript one can use

Again!

"Everything should be made as simple as possible, but no simpler."

Check out "The Zen of Python" and PEP-0008 for Python idioms.

> the comma:
> 
>  > x = 5
> 5
>  > y = (x += 1, x - 1)
> 5
>  > x = 5
> 5
>  > y = (x += 1, x)
> 6
> 
> But in Python the comma would create a tuple.

Exactly, just as driving on the left side of the road will be fine in 
some countries but cause a crash in others. Learn the local rules FIRST!

The 'walrus operator' could be applied:

 >>> x = 5
 >>> y = (x := x + 1); x
6
 >>> x, y
(6, 6)

However, if such were submitted for Code Review, unhappiness would result.

Was the question re-phrased to: how to ... in Python, we'd end-up with 
something more like this:

 >>> x = 5  # define
 >>> x += 1  # increment
 >>> y = x  # alias
 >>> x, y
(6, 6)

-- 
Regards,
=dn

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Thread

Re: Two aces up Python's sleeve Mild Shock <janburse@fastmail.fm> - 2024-11-06 17:27 +0100
  Re: Two aces up Python's sleeve Annada Behera <annada@tilde.green> - 2024-11-07 12:55 +0530
    Re: Two aces up Python's sleeve Mild Shock <janburse@fastmail.fm> - 2024-11-07 15:04 +0100
      Re: Two aces up Python's sleeve Greg Ewing <greg.ewing@canterbury.ac.nz> - 2024-11-08 11:15 +1300
        Re: Two aces up Python's sleeve dn <PythonList@DancesWithMice.info> - 2024-11-08 13:07 +1300
        Re: Two aces up Python's sleeve Mild Shock <janburse@fastmail.fm> - 2024-11-08 01:25 +0100
          Re: Two aces up Python's sleeve Mild Shock <janburse@fastmail.fm> - 2024-11-08 01:29 +0100
            Re: Two aces up Python's sleeve Mild Shock <janburse@fastmail.fm> - 2024-11-08 01:47 +0100
    Re: Two aces up Python's sleeve (Posting On Python-List Prohibited) Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-11-08 01:10 +0000
      Re: Two aces up Python's sleeve (Posting On Python-List Prohibited) Mild Shock <janburse@fastmail.fm> - 2024-11-08 02:40 +0100
        Re: Two aces up Python's sleeve (Posting On Python-List Prohibited) dn <PythonList@DancesWithMice.info> - 2024-11-09 08:09 +1300
          Re: Two aces up Python's sleeve (Posting On Python-List Prohibited) Mild Shock <janburse@fastmail.fm> - 2024-11-08 20:49 +0100
        Re: Two aces up Python's sleeve (Posting On Python-List Prohibited) Thomas Passin <list1@tompassin.net> - 2024-11-08 17:00 -0500

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