Re: for unpacking

From	Patrick Rudin <taxi_bs@gmx.ch>
Newsgroups	de.comp.lang.python
Subject	Re: for unpacking
Date	2024-08-10 12:07 +0200
Message-ID	<lhoseeFnju8U1@mid.individual.net> (permalink)
References	<lhfh20Faok1U1@mid.individual.net> <slrnvb57ba.1h524.hjp-usenet4@trintignant.hjp.at> <lhnbsqFgnfoU1@mid.individual.net> <Regeln-20240810000844@ram.dialup.fu-berlin.de>

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Stefan Ram wrote:
>    Du meinst vielleicht, daß es keine Aliasse für /Stellen/ von
>    Listen gibt. Was also nicht geht ist:
> 
> |>>>| a =[ 1, 2, 3 ]
> |>>>| b = alias_for( a[ 1 ])
> |>>>| b = 4
> |>>>| print( a )
> |   | [1, 4, 3]

Ja, genau sowas. Für Fälle von unpacking, wo eine  wirklich nur zu 99 
Prozent lesend verwendet?

>    . In Python gibt es eine universelle Regel, welche immer für
>    "b = 4" gilt und die besagt, daß durch die Ausführung von "b = 4"
>    der Name b an das Objekt 4 gebunden wird. Würde man nun solche
>    Aliasse erlauben, dann würde es für die Bedeutung von "b = 4"
>    eine spezielle Ausnahme für den Fall, daß b ein Alias ist, geben
>    müssen, aber in Python sagt man: "Besondere Fälle sind nicht so
>    besonders, daß man ihretwegen gegen die Regeln verstoßen muß.".

Dem verlinkten Vortrag meine ich zu entnehmen, dass mein Missverständnis 
gerade in Bezug auf Listen nicht so selten ist...


Gruss

Patrick

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for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2024-08-06 22:57 +0200
  Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2024-08-06 23:45 +0200
    Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2024-08-07 13:24 +0200
  Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2024-08-07 00:02 +0200
    Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2024-08-07 11:54 +0200
      Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2024-08-07 13:21 +0200
        Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2024-08-07 22:58 +0200
    Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2024-08-09 22:18 +0200
      Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2024-08-10 12:07 +0200
        Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2024-08-10 13:49 +0200
      Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2024-08-10 12:46 +0200
        Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2024-08-10 22:09 +0200
          Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2024-08-11 12:26 +0200
            Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2024-08-11 15:05 +0200
              Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2024-08-11 17:44 +0200
            Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2024-08-11 17:26 +0200
              Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2024-08-11 18:16 +0200
                Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2024-08-11 23:18 +0200
                Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2024-08-11 23:43 +0200
                Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2024-08-12 21:03 +0200
                Re: for unpacking Hermann Riemann <nospam.ng@hermann-riemann.de> - 2024-08-13 02:44 +0200
                Re: for unpacking Hermann Riemann <nospam.ng@hermann-riemann.de> - 2024-08-13 19:36 +0200
                Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2024-08-13 19:47 +0200
                Re: for unpacking Hermann Riemann <nospam.ng@hermann-riemann.de> - 2024-08-14 04:38 +0200
                Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2024-08-14 08:26 +0200
                Re: for unpacking Hermann Riemann <nospam.ng@hermann-riemann.de> - 2024-08-14 10:25 +0200
                Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2024-08-14 13:22 +0200
                Re: for unpacking Hermann Riemann <nospam.ng@hermann-riemann.de> - 2024-08-14 14:45 +0200
                Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2024-08-12 21:06 +0200
                Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2024-08-13 00:24 +0200
                Re: for unpacking Hermann Riemann <nospam.ng@hermann-riemann.de> - 2024-08-14 14:41 +0200
                Re: for unpacking Hermann Riemann <nospam.ng@hermann-riemann.de> - 2024-08-14 18:39 +0200
                Re: for unpacking Ralph Aichinger <ralph@pi.h5.or.at> - 2024-08-14 17:05 +0000
                Re: for unpacking Hermann Riemann <nospam.ng@hermann-riemann.de> - 2024-08-15 05:44 +0200
                Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2024-08-16 13:31 +0200
                Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2024-08-13 23:06 +0200
                Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2024-08-13 23:19 +0200
                Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2024-08-14 21:11 +0200
                Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2024-08-14 21:08 +0200
        Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2025-10-06 22:46 +0200
          Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2025-10-06 23:37 +0200
            Re: for unpacking Hermann Riemann <nospam.ng@hermann-riemann.de> - 2025-10-07 09:01 +0200
              Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2025-10-07 14:22 +0200
                Re: for unpacking ram@zedat.fu-berlin.de (Stefan Ram) - 2025-10-07 13:13 +0000
                Re: for unpacking Hermann Riemann <nospam.ng@hermann-riemann.de> - 2025-10-07 15:34 +0200
                Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2025-10-07 22:57 +0200
            Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2025-10-10 21:50 +0200
  [Python-de] Re: for unpacking Mike Müller <mmueller@python-academy.de> - 2024-08-07 09:14 +0200
    Re: [Python-de] Re: for unpacking Patrick Rudin <taxi_bs@gmx.ch> - 2024-08-07 11:57 +0200
      Re: [Python-de] Re: for unpacking "Peter J. Holzer" <hjp-usenet4@hjp.at> - 2024-08-08 23:18 +0200
      [Python-de] Re: for unpacking Mike Müller <mmueller@python-academy.de> - 2024-08-09 08:03 +0200
  Re: for unpacking Hermann Riemann <nospam.ng@hermann-riemann.de> - 2024-08-07 12:35 +0200

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