python · AlexWaygood · Jun 16, 2022 · Jun 14, 2022 · Jun 14, 2022 · Jun 14, 2022
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
@@ -77,22 +77,22 @@ jobs:
         python-version: ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]
       fail-fast: false
     env:
-      PYRIGHT_VERSION: 1.1.248 # Must match pyright_test.py.
+      PYRIGHT_VERSION: 1.1.254 # Must match pyright_test.py.
     steps:
       - uses: actions/checkout@v2
       - uses: jakebailey/pyright-action@v1
         with:
           version: ${{ env.PYRIGHT_VERSION }}
           python-platform: ${{ matrix.python-platform }}
           python-version: ${{ matrix.python-version }}
-          no-comments: ${{ matrix.python-version != '3.9' || matrix.python-platform != 'Linux' }} # Having each job create the same comment is too noisy.
+          no-comments: ${{ matrix.python-version != '3.10' || matrix.python-platform != 'Linux' }} # Having each job create the same comment is too noisy.
           project: ./pyrightconfig.stricter.json
       - uses: jakebailey/pyright-action@v1
         with:
           version: ${{ env.PYRIGHT_VERSION }}
           python-platform: ${{ matrix.python-platform }}
           python-version: ${{ matrix.python-version }}
-          no-comments: ${{ matrix.python-version != '3.9' || matrix.python-platform != 'Linux' }} # Having each job create the same comment is too noisy.
+          no-comments: ${{ matrix.python-version != '3.10' || matrix.python-platform != 'Linux' }} # Having each job create the same comment is too noisy.
 
   stubtest-third-party:
     name: Check third party stubs with stubtest

diff --git a/pyrightconfig.json b/pyrightconfig.json
@@ -12,6 +12,7 @@
     "strictListInference": true,
     "strictDictionaryInference": true,
     "strictParameterNoneValue": true,
+    "strictSetInference": true,
     "reportFunctionMemberAccess": "error",
     "reportMissingModuleSource": "none",
     "reportMissingTypeStubs": "error",
@@ -40,16 +41,18 @@
     "reportUnboundVariable": "error",
     "reportInvalidStubStatement": "error",
     "reportInvalidTypeVarUse": "error",
-    "reportPropertyTypeMismatch": "none",
     "reportSelfClsParameterName": "error",
     "reportUnsupportedDunderAll": "error",
-    // Incompatible overrides are out of typeshed's control as they are
-    // inherited from the implementation.
+    "reportInconsistentConstructor": "error",
+    "reportTypeCommentUsage": "error",
+    "reportUnnecessaryComparison": "error",
+    // Incompatible overrides and property type mismatches are out of typeshed's control
+    // as they are inherited from the implementation.
+    "reportPropertyTypeMismatch": "none",
     "reportIncompatibleMethodOverride": "none",
     "reportIncompatibleVariableOverride": "none",
-    // Overlapping overloads cannot be enabled at this time because
-    // of the "fractions.Fraction.__pow__" method and "tasks.gather" function.
-    // Mypy's overlapping overload logic misses these issues (see mypy
-    // issue #10143 and #10157).
+    // Overlapping overloads are often necessary in a stub, meaning pyright's check
+    // (which is stricter than mypy's; see mypy issue #10143 and #10157)
+    // would cause many false positives and catch few bugs.
     "reportOverlappingOverload": "none",
 }
diff --git a/pyrightconfig.stricter.json b/pyrightconfig.stricter.json
@@ -79,6 +79,7 @@
     "strictListInference": true,
     "strictDictionaryInference": true,
     "strictParameterNoneValue": true,
+    "strictSetInference": true,
     "reportFunctionMemberAccess": "error",
     "reportMissingModuleSource": "none",
     "reportMissingTypeStubs": "error",
@@ -110,16 +111,18 @@
     "reportUnboundVariable": "error",
     "reportInvalidStubStatement": "error",
     "reportInvalidTypeVarUse": "error",
-    "reportPropertyTypeMismatch": "none",
     "reportSelfClsParameterName": "error",
     "reportUnsupportedDunderAll": "error",
-    // Incompatible overrides are out of typeshed's control as they are
-    // inherited from the implementation.
+    "reportInconsistentConstructor": "error",
+    "reportTypeCommentUsage": "error",
+    "reportUnnecessaryComparison": "error",
+    // Incompatible overrides and property type mismatches are out of typeshed's control
+    // as they are inherited from the implementation.
     "reportIncompatibleMethodOverride": "none",
     "reportIncompatibleVariableOverride": "none",
-    // Overlapping overloads cannot be enabled at this time because
-    // of the "fractions.Fraction.__pow__" method and "tasks.gather" function.
-    // Mypy's overlapping overload logic misses these issues (see mypy
-    // issue #10143 and #10157).
+    "reportPropertyTypeMismatch": "none",
+    // Overlapping overloads are often necessary in a stub, meaning pyright's check
+    // (which is stricter than mypy's; see mypy issue #10143 and #10157)
+    // would cause many false positives and catch few bugs.
     "reportOverlappingOverload": "none",
 }
diff --git a/stdlib/_weakref.pyi b/stdlib/_weakref.pyi
@@ -1,4 +1,5 @@
 import sys
+from _typeshed import Self
 from collections.abc import Callable
 from typing import Any, Generic, TypeVar, overload
 from typing_extensions import final
@@ -20,7 +21,7 @@ class ProxyType(Generic[_T]):  # "weakproxy"
 
 class ReferenceType(Generic[_T]):
     __callback__: Callable[[ReferenceType[_T]], Any]
-    def __init__(self, o: _T, callback: Callable[[ReferenceType[_T]], Any] | None = ...) -> None: ...
+    def __new__(cls: type[Self], o: _T, callback: Callable[[ReferenceType[_T]], Any] | None = ...) -> Self: ...
     def __call__(self) -> _T | None: ...
     def __hash__(self) -> int: ...
     if sys.version_info >= (3, 9):

diff --git a/stdlib/abc.pyi b/stdlib/abc.pyi
@@ -1,5 +1,5 @@
 import sys
-from _typeshed import SupportsWrite
+from _typeshed import Self, SupportsWrite
 from collections.abc import Callable
 from typing import Any, Generic, TypeVar
 from typing_extensions import Literal
@@ -11,7 +11,16 @@ _FuncT = TypeVar("_FuncT", bound=Callable[..., Any])
 # These definitions have special processing in mypy
 class ABCMeta(type):
     __abstractmethods__: frozenset[str]
-    def __init__(self, name: str, bases: tuple[type, ...], namespace: dict[str, Any]) -> None: ...
+    if sys.version_info >= (3, 11):
+        def __new__(
+            __mcls: type[Self], __name: str, __bases: tuple[type, ...], __namespace: dict[str, Any], **kwargs: Any
+        ) -> Self: ...
+    else:
+        # pyright doesn't like the first parameter being called mcls, hence the `pyright: ignore`
+        def __new__(
+            mcls: type[Self], name: str, bases: tuple[type, ...], namespace: dict[str, Any], **kwargs: Any  # pyright: ignore
+        ) -> Self: ...
+
     def __instancecheck__(cls: ABCMeta, instance: Any) -> Any: ...
     def __subclasscheck__(cls: ABCMeta, subclass: Any) -> Any: ...
     def _dump_registry(cls: ABCMeta, file: SupportsWrite[str] | None = ...) -> None: ...

diff --git a/stdlib/ctypes/__init__.pyi b/stdlib/ctypes/__init__.pyi
@@ -190,7 +190,9 @@ def wstring_at(address: _CVoidConstPLike, size: int = ...) -> str: ...
 
 class _SimpleCData(Generic[_T], _CData):
     value: _T
-    def __init__(self, value: _T = ...) -> None: ...
+    # The TypeVar can be unsolved here,
+    # but we can't use overloads without creating many, many mypy false-positive errors
+    def __init__(self, value: _T = ...) -> None: ...  # type: ignore
 
 class c_byte(_SimpleCData[int]): ...
 

diff --git a/stdlib/subprocess.pyi b/stdlib/subprocess.pyi
@@ -95,7 +95,8 @@ class CompletedProcess(Generic[_T]):
     # and writing all the overloads would be horrific.
     stdout: _T
     stderr: _T
-    def __init__(self, args: _CMD, returncode: int, stdout: _T | None = ..., stderr: _T | None = ...) -> None: ...
+    # type ignore on __init__ because the TypeVar can technically be unsolved, but see comment above
+    def __init__(self, args: _CMD, returncode: int, stdout: _T | None = ..., stderr: _T | None = ...) -> None: ...  # type: ignore
     def check_returncode(self) -> None: ...
     if sys.version_info >= (3, 9):
         def __class_getitem__(cls, item: Any) -> GenericAlias: ...

diff --git a/stubs/SQLAlchemy/@tests/stubtest_allowlist.txt b/stubs/SQLAlchemy/@tests/stubtest_allowlist.txt
@@ -125,6 +125,15 @@ sqlalchemy.engine.url.URL.normalized_query
 # runtime has extra internal arguments that are inconsistent across micro versions
 sqlalchemy.testing.engines.testing_engine
 
+# __new__ signature conflicts with __init__ signature (which is more precise),
+# so __new__ is deliberately omitted in the stub
+sqlalchemy.sql.annotation.Annotated.__new__
+
+# At runtime __new__ is defined, but we define __init__ in the stub
+# because otherwise all subclasses would be identified by pyright
+# as having conflicting __new__/__init__ methods
+sqlalchemy.orm.unitofwork.PostSortRec.__new__
+
 # unclear problems
 sqlalchemy.sql.elements.quoted_name.lower
 sqlalchemy.sql.elements.quoted_name.upper

diff --git a/stubs/SQLAlchemy/sqlalchemy/orm/unitofwork.pyi b/stubs/SQLAlchemy/sqlalchemy/orm/unitofwork.pyi
@@ -49,7 +49,10 @@ class Preprocess(IterateMappersMixin):
 
 class PostSortRec:
     disabled: Any
-    def __new__(cls, uow, *args): ...
+    # At runtime __new__ is defined, not __init__,
+    # But if we define __new__ here then all subclasses are identified by pyright
+    # as having __init__ methods that are inconsistent with their __new__ methods
+    def __init__(self, uow, *args) -> None: ...
     def execute_aggregate(self, uow, recs) -> None: ...
 
 class ProcessAll(IterateMappersMixin, PostSortRec):

diff --git a/stubs/SQLAlchemy/sqlalchemy/sql/annotation.pyi b/stubs/SQLAlchemy/sqlalchemy/sql/annotation.pyi
@@ -7,7 +7,6 @@ class SupportsCloneAnnotations(SupportsAnnotations): ...
 class SupportsWrappingAnnotations(SupportsAnnotations): ...
 
 class Annotated:
-    def __new__(cls, *args): ...
     __dict__: Any
     def __init__(self, element, values) -> None: ...
     def __reduce__(self): ...

diff --git a/tests/pyright_test.py b/tests/pyright_test.py
@@ -5,7 +5,7 @@
 import sys
 from pathlib import Path
 
-_PYRIGHT_VERSION = "1.1.248"  # Must match .github/workflows/tests.yml.
+_PYRIGHT_VERSION = "1.1.254"  # Must match .github/workflows/tests.yml.
 _WELL_KNOWN_FILE = Path("tests", "pyright_test.py")
 
 

diff --git a/tests/stubtest_allowlists/py3_common.txt b/tests/stubtest_allowlists/py3_common.txt
@@ -26,11 +26,11 @@ _collections_abc.Set.__rxor__
 _csv.Dialect.__init__  # C __init__ signature is inaccurate
 _socket.*
 _threading_local.local.__new__
-_weakref.ref.__call__
-abc.ABCMeta.__new__  # pytype wants the parameter named cls and not mcls
+_weakref.ref.*  # Alias for _weakref.ReferenceType, problems should be fixed there
 _weakref.CallableProxyType.__getattr__  # Should have all attributes of proxy
 _weakref.ProxyType.__getattr__  # Should have all attributes of proxy
 _weakref.ReferenceType.__call__  # C function default annotation is wrong
+_weakref.ReferenceType.__init__  # Runtime defines __new__ but stubtest thinks __init__ is also defined.
 argparse.Namespace.__getattr__  # The whole point of this class is its attributes are dynamic
 asynchat.async_chat.encoding  # Removal planned for 3.12, can add if someone needs this
 asynchat.async_chat.use_encoding  # Removal planned for 3.12, can add if someone needs this
@@ -221,11 +221,11 @@ urllib.request.HTTPPasswordMgrWithPriorAuth.__init__  # Args are passed as is to
 warnings.catch_warnings.__init__  # Defining this ruins the __new__ overrides
 weakref.CallableProxyType.__getattr__  # Should have all attributes of proxy
 weakref.ProxyType.__getattr__  # Should have all attributes of proxy
-weakref.ReferenceType.__call__  # C function default annotation is wrong
+weakref.ReferenceType.*  # Alias for _weakref.ReferenceType, problems should be fixed there
 weakref.WeakKeyDictionary.get
 weakref.WeakKeyDictionary.update
 weakref.WeakValueDictionary.get
-weakref.ref.__call__
+weakref.ref.*  # Alias for _weakref.ReferenceType, problems should be fixed there
 webbrowser.UnixBrowser.remote_action  # always overridden in inheriting class
 webbrowser.UnixBrowser.remote_action_newtab  # always overridden in inheriting class
 webbrowser.UnixBrowser.remote_action_newwin  # always overridden in inheriting class