Fix Pathlib.from_uri return-type (#12276)

stdlib/@tests/test_cases/check_pathlib.py

@@ -1,6 +1,8 @@
 from __future__ import annotations
 
+import sys
 from pathlib import Path, PureWindowsPath
+from typing_extensions import assert_type
 
 if Path("asdf") == Path("asdf"):
     ...
@@ -18,3 +20,11 @@ if Path("asdf") == "asdf":  # type: ignore
 # where they can never hold true.
 if PureWindowsPath("asdf") == Path("asdf"):  # type: ignore
     ...
+
+
+if sys.version_info >= (3, 13):
+
+    class MyCustomPath(Path): ...
+
+    pth = MyCustomPath.from_uri("file:///tmp/abc.txt")
+    assert_type(pth, MyCustomPath)

stdlib/pathlib.pyi

@@ -113,7 +113,7 @@ class Path(PurePath):
 
     if sys.version_info >= (3, 13):
         @classmethod
-        def from_uri(cls, uri: str) -> Path: ...
+        def from_uri(cls, uri: str) -> Self: ...
         def is_dir(self, *, follow_symlinks: bool = True) -> bool: ...
         def is_file(self, *, follow_symlinks: bool = True) -> bool: ...
         def read_text(self, encoding: str | None = None, errors: str | None = None, newline: str | None = None) -> str: ...