Groups > comp.lang.python > #197779

Re: Coming In Python 3.15: Sentinel Values

From	Tim Daneliuk <info@tundraware.com>
Newsgroups	comp.lang.python
Subject	Re: Coming In Python 3.15: Sentinel Values
Date	2026-05-11 19:51 -0500
Organization	A noiseless patient Spider
Message-ID	<95aadm-t721.ln1@oceanview.tundraware.com> (permalink)
References	<10tr770$omms$1@dont-email.me>

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On 5/10/26 19:17, Lawrence D’Oliveiro wrote:
> A new feature coming in Python 3.15 is the “sentinel” class, useful
> for creating custom values to mark the end of sequences of items, that
> kind of thing
> <https://docs.python.org/3.15/library/functions.html#sentinel>,
> <https://peps.python.org/pep-0661/>.
> 
> For those times when a simple “None” marker element is not sufficient,
> this will be very convenient. <SNIP>

Forgive me, but this smells of Feeping Creaturism to solve a not very important question
at the expense crufting up the language and decreasing clarity.

I have seen this happen with every single language I ever used except perhaps,
assembler, C, and Forth.

Oh well, there's an opportunity here for someone to excise the noisy PEPs and
create Python Lite.

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Thread

Coming In Python 3.15: Sentinel Values Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-05-11 00:17 +0000
  Re: Coming In Python 3.15: Sentinel Values Paul Rubin <no.email@nospam.invalid> - 2026-05-10 21:01 -0700
    Re: Coming In Python 3.15: Sentinel Values Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-05-11 06:24 +0000
      Re: Coming In Python 3.15: Sentinel Values Jon Ribbens <jon+usenet@unequivocal.eu> - 2026-05-11 07:13 +0000
  Re: Coming In Python 3.15: Sentinel Values Tim Daneliuk <info@tundraware.com> - 2026-05-11 19:51 -0500
    Re: Coming In Python 3.15: Sentinel Values Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-05-12 02:42 +0000
      Re: Coming In Python 3.15: Sentinel Values Tim Daneliuk <info@tundraware.com> - 2026-05-12 09:52 -0500
    Re: Coming In Python 3.15: Sentinel Values Paul Rubin <no.email@nospam.invalid> - 2026-05-12 01:03 -0700
      Re: Coming In Python 3.15: Sentinel Values Tim Daneliuk <info@tundraware.com> - 2026-05-12 09:54 -0500

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