# PEP 661: Sentinel Values

**URL:** <https://discuss.python.org/t/pep-661-sentinel-values/9126>\
**Category:** PEPs\
**Created:** [June 6, 2021, 8:07am UTC](https://discuss.python.org/t/pep-661-sentinel-values/9126 "2021-06-06T08:07:06Z")\
**Posts on this page:** 1\
**Showing post:** 1

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**Author:** ![taleinat](https://sea2.discourse-cdn.com/flex002/user_avatar/discuss.python.org/taleinat/32/92_2.png) [@taleinat](https://discuss.python.org/u/taleinat)\
**Post date:** [June 6, 2021, 8:07am UTC](https://discuss.python.org/t/pep-661-sentinel-values/9126/1 "2021-06-06T08:07:06Z")

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> **[PEP 661 -- Sentinel Values](https://www.python.org/dev/peps/pep-0661/)**
>
> The official home of the Python Programming Language

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