https://github.com/python/cpython/commit/b546cc10f5c659344ce3cf49db6d9c92307ed1fc
commit: b546cc10f5c659344ce3cf49db6d9c92307ed1fc
branch: main
author: sobolevn <[email protected]>
committer: hauntsaninja <[email protected]>
date: 2026-05-12T08:40:51Z
summary:
Update mypy to 2.1.0 (#149709)
files:
M Lib/test/libregrtest/single.py
M Lib/tomllib/mypy.ini
M Tools/build/check_extension_modules.py
M Tools/build/mypy.ini
M Tools/requirements-dev.txt
diff --git a/Lib/test/libregrtest/single.py b/Lib/test/libregrtest/single.py
index 958a915626ad24..d0759d2626989d 100644
--- a/Lib/test/libregrtest/single.py
+++ b/Lib/test/libregrtest/single.py
@@ -145,7 +145,7 @@ def regrtest_runner(result: TestResult, test_func,
runtests: RunTests) -> None:
# Storage of uncollectable GC objects (gc.garbage)
-GC_GARBAGE = []
+GC_GARBAGE: list[object] = []
def _load_run_test(result: TestResult, runtests: RunTests) -> None:
diff --git a/Lib/tomllib/mypy.ini b/Lib/tomllib/mypy.ini
index 1761dce45562a6..f7eeffd575c1c7 100644
--- a/Lib/tomllib/mypy.ini
+++ b/Lib/tomllib/mypy.ini
@@ -12,6 +12,4 @@ pretty = True
# Enable most stricter settings
enable_error_code = ignore-without-code
strict = True
-strict_bytes = True
-local_partial_types = True
warn_unreachable = True
diff --git a/Tools/build/check_extension_modules.py
b/Tools/build/check_extension_modules.py
index f23c1d5286f92a..c619a9a0c1c5a1 100644
--- a/Tools/build/check_extension_modules.py
+++ b/Tools/build/check_extension_modules.py
@@ -463,7 +463,7 @@ def get_location(self, modinfo: ModuleInfo) -> pathlib.Path
| None:
def _check_file(self, modinfo: ModuleInfo, spec: ModuleSpec) -> None:
"""Check that the module file is present and not empty"""
if spec.loader is BuiltinImporter: # type: ignore[comparison-overlap]
- return
+ return # type: ignore[unreachable]
try:
assert spec.origin is not None
st = os.stat(spec.origin)
diff --git a/Tools/build/mypy.ini b/Tools/build/mypy.ini
index 5465e2d4b6171f..485c9314cf7001 100644
--- a/Tools/build/mypy.ini
+++ b/Tools/build/mypy.ini
@@ -24,8 +24,6 @@ python_version = 3.10
# ...And be strict:
strict = True
-strict_bytes = True
-local_partial_types = True
extra_checks = True
enable_error_code =
ignore-without-code,redundant-expr,truthy-bool,possibly-undefined
warn_unreachable = True
diff --git a/Tools/requirements-dev.txt b/Tools/requirements-dev.txt
index af5cbaa7689f33..46381ea58a1238 100644
--- a/Tools/requirements-dev.txt
+++ b/Tools/requirements-dev.txt
@@ -1,7 +1,7 @@
# Requirements file for external linters and checks we run on
# Tools/clinic, Tools/cases_generator/, and Tools/peg_generator/ in CI
-mypy==1.19.1
+mypy==2.1.0
# needed for peg_generator:
-types-psutil==7.2.2.20260130
-types-setuptools==82.0.0.20260210
+types-psutil==7.2.2.20260508
+types-setuptools==82.0.0.20260508
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