271         def Output(self, stream, data):  member in TestSubprocess.MyOperation
296         plist = Popen(['ps']).CommunicateFilter(oper.Output)
303         plist = Popen([cmd], shell=True).CommunicateFilter(oper.Output)
313         plist = Popen([cmd], shell=True).CommunicateFilter(oper.Output)
322         plist = Popen(cmd, shell=False).CommunicateFilter(oper.Output)
331         plist = Popen(cmd, shell=True).CommunicateFilter(oper.Output)
339             plist = Popen('pwd', shell=shell, cwd='/tmp').CommunicateFilter(oper.Output)
351             plist = Popen(cmd, shell=True, env=env).CommunicateFilter(oper.Output)
370                 shell=True).CommunicateFilter(oper.Output)
383         plist = Popen(both_cmds, shell=True).CommunicateFilter(oper.Output)
391                 shell=True).CommunicateFilter(oper.Output)