Groups > comp.lang.python > #196983

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

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From	Mild Shock <janburse@fastmail.fm>
Newsgroups	comp.lang.python
Subject	Re: Two aces up Python's sleeve (Posting On Python-List Prohibited)
Date	Fri, 8 Nov 2024 02:40:56 +0100
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Well you can use your Browser, since
JavaScript understand post and pre increment:

 > x = 5
5
 > x ++
5
 > x = 5
5
 > ++ x
6

So we have x ++ equals in Python:

     x + = 1
     x - 1

And ++ x equals in Python:

     x += 1
     x

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

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.

Lawrence D'Oliveiro schrieb:
> On Thu, 07 Nov 2024 12:55:53 +0530, Annada Behera wrote:
> 
>> I heard this behavior is because python's integers are immutable.
> 
> Nothing to do with that.
> 
>> ++x or x++ will redefine 5 to 6, which the interpreter forbids ...
> 
> One of those is actually syntactically valid.
> 
> It just won’t do what you expect it to do.
>

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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