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Yes I think Qt5 is the Problem. Thanks for replying. But if i try to install it, this error appears: pi@raspberry:~ $ pip3 install PyQt5 Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple Collecting PyQt5 Using cached https://files.pythonhosted.org/packages/4d/81/b9a66a28fb...

if I run: python --version it says: Python 2.7.16 and if i run : python3 --version it says: Python 3.7.3 But the Idel Shell says 3.7.3 so I think its not a version problem, too. Here is the full message of Idle: >>> RESTART: /home/pi/Desktop/crazyflie-lib-python-master/crazyflie-lib-python-master/ex...

Hallo, I have the same Problem: AttributeError: 'CanvasBackend' object has no attribute 'seParent' You said its a Problem with the Verison of Python. I run it on a rasberry and have python 2.7.16 and python 3.7.3. How can i know on wich version the programm runs? Or simply how can I solve the proble...