#NEWLINE# @ tornado . gen . coroutine #NEWLINE# def start_arbiter( self , cmd = 'support.run_process' , stdout_stream = None , debug = True , **kw ) : #NEWLINE# #INDENT# ( testfile , arbiter ) = self . _create_circus ( cmd , stdout_stream = stdout_stream , debug = debug , async = True , ** kw ) #NEWLINE# self . test_file = testfile #NEWLINE# self . arbiter = stdout_stream #NEWLINE# self . arbiters . append ( arbiter ) #NEWLINE# ( yield self . arbiter . start ( ) )