PySide6 bug

[hannesdelbeke]

Hi

I founda bug, and believe it's related to PySide6.7 release. starting an issue here to make others aware since I believe it might affect everyone using PyQt.

• bug report on PySide forum https://bugreports.qt.io/browse/PYSIDE-2674
• bug report on my app's repo https://github.com/plugget/plugget-unreal-plugin/issues/14

TLDR: using from .. import * and certain import orders break in Pyside6.7, and it seems qtpy triggers one of those conditions.

from PySide6 import QtWidgets

app = QtWidgets.QApplication()
window = QtWidgets.QWidget()
layout = QtWidgets.QVBoxLayout()
window.setLayout(layout)
window.show()
app.exec_()

this code throws an error

LogPython: Error: Traceback (most recent call last):
LogPython: Error:   File "<string>", line 1, in <module>
LogPython: Error:   File "D:\Program Files\Epic Games\UE_5.4\Engine\Binaries\ThirdParty\Python3\Win64\Lib\site-packages\plugget_qt\__init__.py", line 20, in test
LogPython: Error:     window.setLayout(layout)
LogPython: Error: TypeError: 'PySide6.QtWidgets.QWidget.setLayout' called with wrong argument types:
LogPython: Error:   PySide6.QtWidgets.QWidget.setLayout(QVBoxLayout)
LogPython: Error: Supported signatures:
LogPython: Error:   PySide6.QtWidgets.QWidget.setLayout(PySide6.QtWidgets.QLayout)

[hannesdelbeke]

for now, to get around this, i replaced this line

import qtpy.QtWidgets as QtWidgets

with

try:
    import PySide6.QtWidgets as QtWidgets
except ImportError:
    import qtpy.QtWidgets as QtWidgets

which resolved my error in my app

LogPython: Error: WARNING:root:settings file not found: 'C:\Users\H\AppData\Roaming\plugget\settings_plugget.json'
LogPython: Error: Traceback (most recent call last):
LogPython: Error:   File "<string>", line 1, in <module>
LogPython: Error:   File "D:\Program Files\Epic Games\UE_5.4\Engine\Binaries\ThirdParty\Python3\Win64\Lib\site-packages\plugget_qt\__init__.py", line 270, in show
LogPython: Error:     window = MainWindow()
LogPython: Error:              ^^^^^^^^^^^^
LogPython: Error:   File "D:\Program Files\Epic Games\UE_5.4\Engine\Binaries\ThirdParty\Python3\Win64\Lib\site-packages\plugget_qt\__init__.py", line 250, in __init__
LogPython: Error:     central_widget = PluggetWidget(parent=self)
LogPython: Error:                      ^^^^^^^^^^^^^^^^^^^^^^^^^^
LogPython: Error:   File "D:\Program Files\Epic Games\UE_5.4\Engine\Binaries\ThirdParty\Python3\Win64\Lib\site-packages\plugget_qt\__init__.py", line 62, in __init__
LogPython: Error:     self.search_widget.setLayout(search_layout)
LogPython: Error: TypeError: 'PySide6.QtWidgets.QWidget.setLayout' called with wrong argument types:
LogPython: Error:   PySide6.QtWidgets.QWidget.setLayout(QVBoxLayout)
LogPython: Error: Supported signatures:
LogPython: Error:   PySide6.QtWidgets.QWidget.setLayout(PySide6.QtWidgets.QLayout)

[ccordoba12]

Hey @hannesdelbeke, thanks for reporting. This is basically a duplicate of issue #480 and it's not our fault.

It seems PySide 6.7 broke star imports, which is what we use all over the place in this library (instead of importing object by object).