Enable pyi-stubs for _importlib_modulespec (PY-26025)

python/helpers/typeshed/stdlib/3/_importlib_modulespec.pyi

@@ -0,0 +1,40 @@
+# ModuleSpec, ModuleType, Loader are part of a dependency cycle.
+# They are officially defined/exported in other places:
+#
+# - ModuleType in types
+# - Loader in importlib.abc
+# - ModuleSpec in importlib.machinery (3.4 and later only)
+
+from abc import ABCMeta
+import sys
+from typing import Any, Dict, List, Optional
+
+class ModuleSpec:
+    def __init__(self, name: str, loader: Optional[Loader], *,
+                 origin: Optional[str] = ..., loader_state: Any = ...,
+                 is_package: Optional[bool] = ...) -> None: ...
+    name = ...  # type: str
+    loader = ...  # type: Optional[Loader]
+    origin = ...  # type: Optional[str]
+    submodule_search_locations = ...  # type: Optional[List[str]]
+    loader_state = ...  # type: Any
+    cached = ...  # type: Optional[str]
+    parent = ...  # type: Optional[str]
+    has_location = ...  # type: bool
+
+class ModuleType:
+    __name__ = ...  # type: str
+    __file__ = ...  # type: str
+    __dict__ = ...  # type: Dict[str, Any]
+    __loader__ = ...  # type: Optional[Loader]
+    __package__ = ...  # type: Optional[str]
+    __spec__ = ...  # type: Optional[ModuleSpec]
+    def __init__(self, name: str, doc: Optional[str] = ...) -> None: ...
+
+class Loader(metaclass=ABCMeta):
+    def load_module(self, fullname: str) -> ModuleType: ...
+    def module_repr(self, module: ModuleType) -> str: ...
+    def create_module(self, spec: ModuleSpec) -> Optional[ModuleType]: ...
+    # Not defined on the actual class for backwards-compatibility reasons,
+    # but expected in new code.
+    def exec_module(self, module: ModuleType) -> None: ...

python/tools/src/com/jetbrains/python/tools/PyTypeShedSync.kts

@@ -22,7 +22,7 @@ sync(repo, bundled)
 
 val whiteList = setOf("typing", "six", "__builtin__", "builtins", "exceptions", "types", "datetime", "functools", "shutil", "re", "time",
                       "argparse", "uuid", "threading", "signal", "collections", "subprocess", "math", "queue", "socket", "sqlite3", "attr",
-                      "pathlib", "io", "_io", "itertools", "ssl", "multiprocessing", "asyncio", "mock", "unittest")
+                      "pathlib", "io", "_io", "itertools", "ssl", "multiprocessing", "asyncio", "mock", "unittest", "_importlib_modulespec")
 
 clean(topLevelPackages(bundled), whiteList)