4 from __future__ 
import print_function
 
    7 def addTrace(robot, trace, entityName, signalName, autoRecompute=True):
 
    9     Add a signal to a tracer and recompute it automatically if necessary. 
   11     signal = 
"{0}.{1}".format(entityName, signalName)
 
   12     filename = 
"{0}-{1}".format(entityName, signalName).replace(
"/", 
"_")
 
   13     trace.add(signal, filename)
 
   15         robot.device.after.addSignal(signal)