Fix QObject findChildren and findChild signature

Author: bluebird75

PySide6-stubs/QtCore.pyi

@@ -5947,11 +5947,11 @@ class QObject(Shiboken.Object):
     def emit(self, arg__1: Union[bytes, bytearray, memoryview], *args: None) -> bool: ...
     def event(self, event: PySide6.QtCore.QEvent) -> bool: ...
     def eventFilter(self, watched: PySide6.QtCore.QObject, event: PySide6.QtCore.QEvent) -> bool: ...
-    def findChild(self, type: type, name: str = ..., options: PySide6.QtCore.Qt.FindChildOption = ...) -> Optional[PlaceHolderType]: ...
+    def findChild(self, type: Type[PlaceHolderType], name: str = ..., options: PySide6.QtCore.Qt.FindChildOption = ...) -> Optional[PlaceHolderType]: ...
     @overload
-    def findChildren(self, type: type, name: str = ..., options: PySide6.QtCore.Qt.FindChildOption = ...) -> Iterable[PlaceHolderType]: ...
+    def findChildren(self, type: Type[PlaceHolderType], name: str = ..., options: PySide6.QtCore.Qt.FindChildOption = ...) -> List[PlaceHolderType]: ...
     @overload
-    def findChildren(self, type: type, pattern: Union[PySide6.QtCore.QRegularExpression, str], options: PySide6.QtCore.Qt.FindChildOption = ...) -> Iterable[PlaceHolderType]: ...
+    def findChildren(self, type: Type[PlaceHolderType], pattern: Union[PySide6.QtCore.QRegularExpression, str], options: PySide6.QtCore.Qt.FindChildOption = ...) -> List[PlaceHolderType]: ...
     def inherits(self, classname: str) -> bool: ...
     def installEventFilter(self, filterObj: PySide6.QtCore.QObject) -> None: ...
     def isQuickItemType(self) -> bool: ...

tests/qobject.py

@@ -1,4 +1,4 @@
-from typing import List, Iterable
+from typing import List, Iterable, Optional
 
 from PySide6.QtCore import QObject
 from PySide6.QtWidgets import QWidget, QApplication
@@ -7,9 +7,11 @@
     app = QApplication([])
 
 o1 = QWidget()
-o2 = QWidget(o1)
+w2 = QWidget(o1)
 o3 = QObject(o1)
 
+### QObject.findChildren()
+
 a: List[QObject]
 a = o1.findChildren(QObject)
 assert type(a) == list
@@ -22,12 +24,23 @@
 
 # incorrect here, correctly detected by mypy
 c: List[QWidget]
-c = o1.findChildren(QObject, '')
+c = o1.findChildren(QObject, '')    # type: ignore[arg-type]
 
 # cast works, List[QWidget] is a List[QObject]
 d: List[QObject]
 d = o1.findChildren(QWidget, '')
 
+
+### QObject.findChild()
+w3: Optional[QWidget] = None
+w3 = o1.findChild(QWidget)
+
+# incorrect here, correctly detected by mypy
+w3 = o1.findChild(QObject)  # type: ignore[assignment]
+
+
+### inherits and other methods
+
 o1.inherits('toto')
 try:
     o1.inherits(b'toto')    # type: ignore[arg-type]