from PyQt4.QtCore import QObject, SIGNAL
class A:
    def main_slot(self,text):
        print "Class A comming: ",text
class B(QObject):
    def send_signal(self,text):
        print "Class B send signal: ",text
        self.emit( SIGNAL("main_signal(PyQt_PyObject)"), text )
        
#----------------------------------------------------------------------
def Simp(txt):
    """"""
    print "Function ", txt        
        
if __name__=="__main__":
    a = A()
    b = B()
    QObject.connect( b, SIGNAL("main_signal(PyQt_PyObject)"), a.main_slot )
    QObject.connect( b, SIGNAL("main_signal(PyQt_PyObject)"), Simp )
    b.send_signal("Hi, object a")