exception when closing pyqt5 user interface
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I'm developing a GUI using QTCreator and pyqt5 which uses a pair of threads to get data from sensors to display them on the GUI. I have a button to exit and close the GUI, but after closing it prints the following exception:
Exception ignored in: <function WeakValueDictionary.__init__.<locals>.remove at 0x71d4ef60>
Traceback (most recent call last):
File "/usr/lib/python3.5/weakref.py", line 117, in remove
TypeError: 'NoneType' object is not callable
Right now my program starts with:
if __name__ == '__main__':
app = QApplication(sys.argv)
form = Powapp()
#form.showFullScreen()
form.show()
sys.exit(app.exec())
and I've found out that if it gets started the following way, no exception appears and the app closes correctly:
def main():
app = QApplication(sys.argv)
form = Powapp()
#form.showFullScreen()
form.show()
sys.exit(app.exec())
if __name__ == '__main__':
main()
Is someone familiar with what causes that exception? I've read on several pages about starting a GUI, but I don't quite understand what's the difference between both ways of starting the program. Can somebody guide me please?
python python-3.x pyqt pyqt5
asked Nov 9 at 16:41
Fabian S
104
add a comment |
up vote
0
down vote
favorite
I'm developing a GUI using QTCreator and pyqt5 which uses a pair of threads to get data from sensors to display them on the GUI. I have a button to exit and close the GUI, but after closing it prints the following exception:
Exception ignored in: <function WeakValueDictionary.__init__.<locals>.remove at 0x71d4ef60>
Traceback (most recent call last):
File "/usr/lib/python3.5/weakref.py", line 117, in remove
TypeError: 'NoneType' object is not callable
Right now my program starts with:
if __name__ == '__main__':
app = QApplication(sys.argv)
form = Powapp()
#form.showFullScreen()
form.show()
sys.exit(app.exec())
and I've found out that if it gets started the following way, no exception appears and the app closes correctly:
def main():
app = QApplication(sys.argv)
form = Powapp()
#form.showFullScreen()
form.show()
sys.exit(app.exec())
if __name__ == '__main__':
main()
Is someone familiar with what causes that exception? I've read on several pages about starting a GUI, but I don't quite understand what's the difference between both ways of starting the program. Can somebody guide me please?
python python-3.x pyqt pyqt5
asked Nov 9 at 16:41
Fabian S
104
If Powapp is replaced by QWidget still have the same behavior? If so, I ask you to replace Powapp with QWidget, if not then I ask you to provide a Minimal, Complete, and Verifiable example because the error would depend on Powapp.
– eyllanesc
Nov 9 at 16:54
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I'm developing a GUI using QTCreator and pyqt5 which uses a pair of threads to get data from sensors to display them on the GUI. I have a button to exit and close the GUI, but after closing it prints the following exception:
Exception ignored in: <function WeakValueDictionary.__init__.<locals>.remove at 0x71d4ef60>
Traceback (most recent call last):
File "/usr/lib/python3.5/weakref.py", line 117, in remove
TypeError: 'NoneType' object is not callable
Right now my program starts with:
if __name__ == '__main__':
app = QApplication(sys.argv)
form = Powapp()
#form.showFullScreen()
form.show()
sys.exit(app.exec())
and I've found out that if it gets started the following way, no exception appears and the app closes correctly:
def main():
app = QApplication(sys.argv)
form = Powapp()
#form.showFullScreen()
form.show()
sys.exit(app.exec())
if __name__ == '__main__':
main()
Is someone familiar with what causes that exception? I've read on several pages about starting a GUI, but I don't quite understand what's the difference between both ways of starting the program. Can somebody guide me please?
python python-3.x pyqt pyqt5
asked Nov 9 at 16:41
Fabian S
104
I'm developing a GUI using QTCreator and pyqt5 which uses a pair of threads to get data from sensors to display them on the GUI. I have a button to exit and close the GUI, but after closing it prints the following exception:
Exception ignored in: <function WeakValueDictionary.__init__.<locals>.remove at 0x71d4ef60>
Traceback (most recent call last):
File "/usr/lib/python3.5/weakref.py", line 117, in remove
TypeError: 'NoneType' object is not callable
Right now my program starts with:
if __name__ == '__main__':
app = QApplication(sys.argv)
form = Powapp()
#form.showFullScreen()
form.show()
sys.exit(app.exec())
and I've found out that if it gets started the following way, no exception appears and the app closes correctly:
def main():
app = QApplication(sys.argv)
form = Powapp()
#form.showFullScreen()
form.show()
sys.exit(app.exec())
if __name__ == '__main__':
main()
Is someone familiar with what causes that exception? I've read on several pages about starting a GUI, but I don't quite understand what's the difference between both ways of starting the program. Can somebody guide me please?
python python-3.x pyqt pyqt5
python python-3.x pyqt pyqt5
asked Nov 9 at 16:41
Fabian S
104
asked Nov 9 at 16:41
Fabian S
104
edited Nov 9 at 18:31
asked Nov 9 at 16:41
Fabian S
104
asked Nov 9 at 16:41
Fabian S
104
asked Nov 9 at 16:41
Fabian S
104
104
If Powapp is replaced by QWidget still have the same behavior? If so, I ask you to replace Powapp with QWidget, if not then I ask you to provide a Minimal, Complete, and Verifiable example because the error would depend on Powapp.
– eyllanesc
Nov 9 at 16:54
add a comment |
If Powapp is replaced by QWidget still have the same behavior? If so, I ask you to replace Powapp with QWidget, if not then I ask you to provide a Minimal, Complete, and Verifiable example because the error would depend on Powapp.
– eyllanesc
Nov 9 at 16:54
If Powapp is replaced by QWidget still have the same behavior? If so, I ask you to replace Powapp with QWidget, if not then I ask you to provide a Minimal, Complete, and Verifiable example because the error would depend on Powapp.
– eyllanesc
Nov 9 at 16:54
If Powapp is replaced by QWidget still have the same behavior? If so, I ask you to replace Powapp with QWidget, if not then I ask you to provide a Minimal, Complete, and Verifiable example because the error would depend on Powapp.
– eyllanesc
Nov 9 at 16:54
add a comment |
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If Powapp is replaced by QWidget still have the same behavior? If so, I ask you to replace Powapp with QWidget, if not then I ask you to provide a Minimal, Complete, and Verifiable example because the error would depend on Powapp.
– eyllanesc
Nov 9 at 16:54