PyQt Progressbar QThread does not work correct

Question

I have a problem with my code. My plan is to show the progress of a for loop using a progressbar. My idea was to use Qthread. My code below works somehow, but not 100 percently correct. The progressbar shows the progress of the for loop, but not via a thread i.e. if I try to click more then once on Stop the GUI freezes. I am not a QtCore expert. Can please someone help me and tell me why it does not work the way I want it to work?

Thanks a lot!

from PyQt4 import QtGui, QtCore

#Progressbar
class MyCustomWidget(QtGui.QWidget):

    def __init__(self, parent=None):
        super(MyCustomWidget, self).__init__(parent)
        layout = QtGui.QVBoxLayout(self)       

        self.progressBar = QtGui.QProgressBar(self)
        self.progressBar.setRange(0,100)
        layout.addWidget(self.progressBar)

    #Update Progressbar
    def onProgress(self, i):
        self.progressBar.setValue(i)
        if self.progressBar.value() >= self.progressBar.maximum():
            self.close()

#Threading Class
class ASA(QtCore.QThread):
    notifyProgress = QtCore.pyqtSignal(int)
    def run(self, i):

        #Sends the new information to the Update Function
        self.notifyProgress.emit(i)
        time.sleep(0.01)

#-----------------------------------------#
#Main Function
app = QtGui.QApplication(sys.argv)
bar = MyCustomWidget()
bar.show()

bar.asa = ASA()
bar.asa.notifyProgress.connect(bar.onProgress)
bar.asa.start()

#For loop for the progressbar
for i in range(105):
    ASA.run(bar.asa, i)
    time.sleep(0.5)  

sys.exit(app.exec_())

Answer 1

The loop needs to be run inside the thread itself:

def run(self):
    #Sends the new information to the Update Function
    for i in range(105):
        self.notifyProgress.emit(i)
        time.sleep(0.01)