[New-bugs-announce] [issue37058] Implement PEP 544: add Protocol to typing

[Ivan Levkivskyi]

New submission from Ivan Levkivskyi <levkivskyi at gmail.com>:

The implementation would be basically copying some code from `typing_extension` and fixing some important known issues (such as renaming @runtime to @runtime_checkable and allowing sub-protocols of builtin protocols). Also ideally we should get rid of the metaclass `_ProtocolMeta`.

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assignee: levkivskyi
components: Library (Lib)
messages: 343576
nosy: gvanrossum, levkivskyi, lukasz.langa
priority: normal
severity: normal
stage: needs patch
status: open
title: Implement PEP 544: add Protocol to typing
type: enhancement
versions: Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37058>
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