PyQt5 QApplication causing segmentation fault

[Jon]

When trying to create a QtWidgets.QApplication in Python usingPyQt5, I get a segmentation fault. I have tried with very simple code:

from PyQt5 import QtWidgets

print("1")
app = QtWidgets.QApplication([' '])
print("2")
sys.exit()

I get the output:

1
Segmentation fault

Changing the arguments of QApplication to sys.argv makes no difference. I've also tried add a 'del' statement to see if this was GC related.

I unfortunately cannot get python bindings of gdb to work, but I've attached the gdb backtrace (incase helpful).

This is a fresh install. I've forced all python3 and pyqt5 packages to reinstall. I've also run apt-get update and dist-upgrade

Version information:

Linux raspberryjon 4.14.79+ #1159 Sun Nov 4 17:28:08 GMT 2018 armv6l GNU/Linux

Package: python3-pyqt5
Maintainer: Debian Python Modules Team <email address hidden>
Architecture: armhf
Source: pyqt5
Version: 5.7+dfsg-5

Package: python3.5
Maintainer: Matthias Klose <email address hidden>
Architecture: armhf
Multi-Arch: allowed
Version: 3.5.3-1+deb9u1