PyQt5 QThread Process finished with exit code 139 (interrupted by signal 11: SIGSEGV)

[Giuseppe Corbelli]

On 6/30/21 1:37 PM, Demosthenes Koptsis wrote:
> i have a GUI with PyQt5. The GUI has a Form, 2 Buttons and a 
> ProgressBar. I want to implement a start/wait thread with QThread. 
> Unfortunately i get Process finished with exit code 139 (interrupted by 
> signal 11: SIGSEGV) when i click Start button to run thread.
...
> class MainWindow(QWidget, QThread):

This is the root of all problems. UI (QWidget) subclasses must live in 
the main thread.
Besides that you usually do NOT subclass QThread [1] but moveToThread() 
a QObject subclass and communicate with signals and slots.

[1] https://www.qt.io/blog/2010/06/17/youre-doing-it-wrong
-- 
Giuseppe Corbelli