Add more defaults to the stdlib (#9606)

Continuing work towards #8988.

The first five commits were created using stubdefaulter on various Python versions; the following commits were all created manually by me to fix various problems. The main things this adds that weren't present in #9501 are:

- Defaults in Windows-only modules and Windows-only branches (because I'm running a Windows machine)
- Defaults in non-py311 branches
- Defaults for float parameters
- Defaults for overloads

stdlib/unittest/case.pyi

@@ -123,21 +123,21 @@ class TestCase:
     def assertIsInstance(self, obj: object, cls: _IsInstanceClassInfo, msg: Any = None) -> None: ...
     def assertNotIsInstance(self, obj: object, cls: _IsInstanceClassInfo, msg: Any = None) -> None: ...
     @overload
-    def assertGreater(self, a: SupportsDunderGT[_T], b: _T, msg: Any = ...) -> None: ...
+    def assertGreater(self, a: SupportsDunderGT[_T], b: _T, msg: Any = None) -> None: ...
     @overload
-    def assertGreater(self, a: _T, b: SupportsDunderLT[_T], msg: Any = ...) -> None: ...
+    def assertGreater(self, a: _T, b: SupportsDunderLT[_T], msg: Any = None) -> None: ...
     @overload
-    def assertGreaterEqual(self, a: SupportsDunderGE[_T], b: _T, msg: Any = ...) -> None: ...
+    def assertGreaterEqual(self, a: SupportsDunderGE[_T], b: _T, msg: Any = None) -> None: ...
     @overload
-    def assertGreaterEqual(self, a: _T, b: SupportsDunderLE[_T], msg: Any = ...) -> None: ...
+    def assertGreaterEqual(self, a: _T, b: SupportsDunderLE[_T], msg: Any = None) -> None: ...
     @overload
-    def assertLess(self, a: SupportsDunderLT[_T], b: _T, msg: Any = ...) -> None: ...
+    def assertLess(self, a: SupportsDunderLT[_T], b: _T, msg: Any = None) -> None: ...
     @overload
-    def assertLess(self, a: _T, b: SupportsDunderGT[_T], msg: Any = ...) -> None: ...
+    def assertLess(self, a: _T, b: SupportsDunderGT[_T], msg: Any = None) -> None: ...
     @overload
-    def assertLessEqual(self, a: SupportsDunderLT[_T], b: _T, msg: Any = ...) -> None: ...
+    def assertLessEqual(self, a: SupportsDunderLT[_T], b: _T, msg: Any = None) -> None: ...
     @overload
-    def assertLessEqual(self, a: _T, b: SupportsDunderGT[_T], msg: Any = ...) -> None: ...
+    def assertLessEqual(self, a: _T, b: SupportsDunderGT[_T], msg: Any = None) -> None: ...
     # `assertRaises`, `assertRaisesRegex`, and `assertRaisesRegexp`
     # are not using `ParamSpec` intentionally,
     # because they might be used with explicitly wrong arg types to raise some error in tests.
@@ -203,49 +203,49 @@ class TestCase:
     def assertAlmostEqual(self, first: _S, second: _S, places: None, msg: Any, delta: _SupportsAbsAndDunderGE) -> None: ...
     @overload
     def assertAlmostEqual(
-        self, first: _S, second: _S, places: None = ..., msg: Any = ..., *, delta: _SupportsAbsAndDunderGE
+        self, first: _S, second: _S, places: None = None, msg: Any = None, *, delta: _SupportsAbsAndDunderGE
     ) -> None: ...
     @overload
     def assertAlmostEqual(
         self,
         first: SupportsSub[_T, SupportsAbs[SupportsRound[object]]],
         second: _T,
-        places: int | None = ...,
-        msg: Any = ...,
-        delta: None = ...,
+        places: int | None = None,
+        msg: Any = None,
+        delta: None = None,
     ) -> None: ...
     @overload
     def assertAlmostEqual(
         self,
         first: _T,
         second: SupportsRSub[_T, SupportsAbs[SupportsRound[object]]],
-        places: int | None = ...,
-        msg: Any = ...,
-        delta: None = ...,
+        places: int | None = None,
+        msg: Any = None,
+        delta: None = None,
     ) -> None: ...
     @overload
     def assertNotAlmostEqual(self, first: _S, second: _S, places: None, msg: Any, delta: _SupportsAbsAndDunderGE) -> None: ...
     @overload
     def assertNotAlmostEqual(
-        self, first: _S, second: _S, places: None = ..., msg: Any = ..., *, delta: _SupportsAbsAndDunderGE
+        self, first: _S, second: _S, places: None = None, msg: Any = None, *, delta: _SupportsAbsAndDunderGE
     ) -> None: ...
     @overload
     def assertNotAlmostEqual(
         self,
         first: SupportsSub[_T, SupportsAbs[SupportsRound[object]]],
         second: _T,
-        places: int | None = ...,
-        msg: Any = ...,
-        delta: None = ...,
+        places: int | None = None,
+        msg: Any = None,
+        delta: None = None,
     ) -> None: ...
     @overload
     def assertNotAlmostEqual(
         self,
         first: _T,
         second: SupportsRSub[_T, SupportsAbs[SupportsRound[object]]],
-        places: int | None = ...,
-        msg: Any = ...,
-        delta: None = ...,
+        places: int | None = None,
+        msg: Any = None,
+        delta: None = None,
     ) -> None: ...
     def assertRegex(self, text: AnyStr, expected_regex: AnyStr | Pattern[AnyStr], msg: Any = None) -> None: ...
     def assertNotRegex(self, text: AnyStr, unexpected_regex: AnyStr | Pattern[AnyStr], msg: Any = None) -> None: ...

stdlib/unittest/mock.pyi

@@ -408,7 +408,12 @@ if sys.version_info >= (3, 10):
 
 else:
     def create_autospec(
-        spec: Any, spec_set: Any = ..., instance: Any = ..., _parent: Any | None = ..., _name: Any | None = ..., **kwargs: Any
+        spec: Any,
+        spec_set: Any = False,
+        instance: Any = False,
+        _parent: Any | None = None,
+        _name: Any | None = None,
+        **kwargs: Any,
     ) -> Any: ...
 
 class _SpecState:

stdlib/unittest/signals.pyi

@@ -10,6 +10,6 @@ def installHandler() -> None: ...
 def registerResult(result: unittest.result.TestResult) -> None: ...
 def removeResult(result: unittest.result.TestResult) -> bool: ...
 @overload
-def removeHandler(method: None = ...) -> None: ...
+def removeHandler(method: None = None) -> None: ...
 @overload
 def removeHandler(method: Callable[_P, _T]) -> Callable[_P, _T]: ...