typing: make Protocol definition reflect runtime - #16386
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Diff from mypy_primer, showing the effect of this PR on open source code: beartype (https://github.com/beartype/beartype)
+ beartype/_util/hint/pep/proposal/pep544.py:115: error: Unused "type: ignore" comment [unused-ignore]
trio (https://github.com/python-trio/trio)
+ src/trio/_tests/test_exports.py:36: error: Incompatible types in assignment (expression has type "type[typing._Protocol]", variable has type "type[typing_extensions._Protocol]") [assignment]
DateType (https://github.com/glyph/DateType)
- src/datetype/__init__.py:29: error: Unused "type: ignore" comment [unused-ignore]
dacite (https://github.com/konradhalas/dacite)
- dacite/data.py:4: error: Unused "type: ignore" comment [unused-ignore]
meson (https://github.com/mesonbuild/meson)
+ mesonbuild/minstall.py:43:9: error: Incompatible import of "Protocol" (imported name has type "type[typing_extensions._Protocol]", local name has type "type[typing._Protocol]") [assignment]
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Follow-up to #14583, which moved
Genericfrom_SpecialFormtotype[_Generic]and namedProtocolas a future candidate for the same treatment. See python/mypy#21940.Declare
class _Protocoland usetype[_Protocol]fortyping.Protocolandtyping_extensions.Protocol, mirroringGeneric; remove the stubtest allowlist entries this makes unnecessary.Agent used: ZCode (GLM)