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From: Paul Rubin <no.email@nospam.invalid>
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Subject: Re: Coming In Python 3.15: Sentinel Values
Date: Sun, 10 May 2026 21:01:00 -0700
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Lawrence D’Oliveiro <ldo@nz.invalid> writes:
> For those times when a simple “None” marker element is not sufficient,
> this will be very convenient.

object() has always worked for me.