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

[Demosthenes Koptsis]

What do you think of this implementation ?


Thread.py

---------------------------

from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from MainWindow import *
import sys
import time


class RunThread(QtCore.QThread):
     counter_value = QtCore.pyqtSignal(int)  # define new Signal

     def __init__(self, parent=None, counter_start=0):
         super(RunThread, self).__init__(parent)
         self.counter = counter_start
         self.is_running = True

     def run(self):
         self.is_running = True
         while self.counter < 100 and self.is_running is True:
             time.sleep(0.5)
             self.counter += 1
             self.counter_value.emit(self.counter)  # emit new Signal 
with value

     def stop(self):
         try:
             self.is_running = False
             self.terminate()
         except:
             pass

     def wait(self):
         try:
             self.is_running = False
             self.wait()
         except:
             pass

class MainWindow(QWidget):
     def __init__(self, parent=None):
         super(MainWindow, self).__init__(parent)
         self.ui = Ui_Form()
         self.ui.setupUi(self)
         self.center()
         #Init progressBar
         self.ui.progressBar.setValue(0)
         #Buttons
         self.ui.btnRun.clicked.connect(self.StartThread)
         self.ui.btnStop.clicked.connect(self.WaitThread)
         self.ui.dial.sliderMoved.connect(self.SetLCD)
         #Init Thread
         self.MyThread = RunThread(parent=None, counter_start=0)

     def SetLCD(self):
         self.ui.lcdNumber.display(self.ui.dial.value())

     def WaitThread(self):
         self.MyThread.wait()

     def StartThread(self):
         self.MyThread.start()
self.MyThread.counter_value.connect(self.SetProgressBarValue)

     def SetProgressBarValue(self):
         self.ui.progressBar.setValue(self.MyThread.counter)

     def center(self):
         # geometry of the main window
         qr = self.frameGeometry()

         # center point of screen
         cp = QDesktopWidget().availableGeometry().center()

         # move rectangle's center point to screen's center point
         qr.moveCenter(cp)

         # top left of rectangle becomes top left of window centering it
         self.move(qr.topLeft())

if __name__ == '__main__':
     app = QApplication(sys.argv)
     w = MainWindow()
     #   Disable maximize window button
     w.setWindowFlags(Qt.WindowCloseButtonHint | 
Qt.WindowMinimizeButtonHint)
     w.show()
     sys.exit(app.exec_())