#imports, yay!
import sys, time
from PyQt4 import QtCore, QtGui
from PyQt4.QtCore import *

#create thread class
class thread_signal( QThread ):
	#define signals
	__pyqtSignals__ = ( "thread_sig", "close" )
	def __init__ ( self, ktime, name ):
		#ktime is how long to sleep for
		#name is a name for the thread.
		self.ktime = ktime
		self.name = name
		QThread.__init__ ( self )

	def run( self ):
		#night night
		time.sleep(self.ktime )
		#good morning!
		self.emit( SIGNAL("thread_sig"), str(self.name))
		if self.name == "thread4":
			#without calling app.exit, your python app will hang forever and ever.  So we do this on the last thread.
			self.emit ( SIGNAL("close") )

#output is always good..
def output( name=None ):
	print name + " completed."

if __name__ == "__main__":
	app=QCoreApplication(sys.argv)
	#create threads
	thread1=thread_signal(1, "thread1")
	thread2=thread_signal(3, "thread2")
	thread3=thread_signal(2, "thread3")
	thread4=thread_signal(4, "thread4")
	#connect signals
	QObject.connect(thread1, SIGNAL("thread_sig"), output)
	QObject.connect(thread2, SIGNAL("thread_sig"), output)
	QObject.connect(thread3, SIGNAL("thread_sig"), output)
	QObject.connect(thread4, SIGNAL("thread_sig"), output)
	QObject.connect(thread4, SIGNAL("close"), app.exit)
	#start threads
	thread1.start()	
	thread2.start()	
	thread3.start()	
	thread4.start()	
	#start application, waiting for threads to complete.
	sys.exit(app.exec_())

~/test $ python thread.py
thread1 completed.
thread3 completed.
thread2 completed.
thread4 completed.
~/test $