self.central_widget.findChildren() has inaccurate output type #216
Description
if I install the stubs the returned type seems incorrect. For instance, given the code below:
input_widgets = self.central_widget.findChildren(
(QPushButton, QSlider, QLineEdit, QComboBox))
for widget in input_widgets:
widget.setEnabled(activate)pylance shows: (variable) input_widgets: List[QObject] and I see this error:
Cannot access attribute "setEnabled" for class "QObject"
Attribute "setEnabled" is unknown
while without stubs,
pylance says: (variable) input_widgets: List[QPushButton | QSlider | QLineEdit | QComboBox] and I can autocomplete setEnabled()
I had to install PyQt5-stubs because I noticed that if I inherit from QMainWindow and and use it later like this:
from dataclasses import dataclass
from PyQt5.QtWidgets import QMainWindow
class MainWindow(QMainWindow):
attr1: int
def __init__(self):
super().__init__()
@dataclass
class SubWindow:
main: MainWindow
sub = SubWindow(MainWindow())pylance cannot see main in SubWindow properly without stubs so you cannot autocomplete attr1 for instance. I tested defining Subwindow regularly without dataclass but it didn't help. The problem will be fixed only if I remove QMainWindow. I don't know why!
But installing stubs fixes the later issue. Yet it causes the former issue of getting objects from children and not the exact queries.
I tested the same code with PyQt6 without stubs, and it worked.