2 different examples of reading the progressive output of a process in PyQt. 1) Using a QProcess 2) Using subprocess [https://groups.google.com/d/msg/python_inside_maya/x9COZGNPGEU/gD4xpbs3S08J]

read_qt_process.py

from functools import partial
from subprocess import Popen, PIPE

from PyQt4 import QtCore, QtGui


## testProgram.sh
"""
#!/bin/bash

for i in {1..5}
    do echo "Progress: $i"
    sleep 1
done
"""
COMMAND = "/path/to/testProgram.sh "


def started():
  print "Started!"

def finished():
	QtGui.qApp.quit()


### 1) QProcess ###
def dataReady(p):
	print str(p.readAllStandardOutput()).strip()

def main():
	process = QtCore.QProcess()

	process.started.connect(started)
	process.readyReadStandardOutput.connect(partial(dataReady, process))
	process.finished.connect(finished)

	# start it some time after the event loop
	QtCore.QTimer.singleShot(100, partial(process.start, COMMAND))

### 2) Subprocess ###
def process():
	started()

	process = Popen([COMMAND], stdout=PIPE)

	while True:
		line = process.stdout.readline()
		if not line:
			break
		QtGui.qApp.processEvents()
		print line.strip()

	finished()

def main2():
	# start it some time after the event loop
	QtCore.QTimer.singleShot(100, process)


if __name__ == "__main__":
	app = QtGui.QApplication([])
	
	main()
	# main2()
	
	app.exec_()

testProgram.sh

#!/bin/bash

for i in {1..5}
    do echo "Progress: $i"
    sleep 1
done

oh this is exactly what I've been looking for!
Thanks for putting this up :)
was trying to implement this utilising QThreads... am quite a novice in Qt 😅