pipe tail -f to Qlistbox realtime

[unclecameron]

I'm running a process with pyqt which produces a running output to /var/log/somefile.log. How can I pipe a realtime tail -f of somelogfile.log to a Qlistbox as the process is running, so far I have

f = os.system("tail -f /var/log/somefile.log")
while 1:
	next = sys.stdin.readline(f)
	self.resultsbox.insertItem(f) 
		if not next:
		break

f = os.system("tail -f /var/log/somefile.log")
while 1:
	next = sys.stdin.readline(f)
	self.resultsbox.insertItem(f) 
		if not next:
		break

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but nothing is displayed in my Qlistbox, what are best practices, is there another way I should be doing this?