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在ALMemory变量中读取结果

我们创建一个到ALMemory的代理，并查看ALVisionRecognition的输出变量。

                import os
                import sys
                import time
                
                import naoqi
                from naoqi import *
                
                count = 10
                moduleName = "Python_Reco"
                PC_IP = "127.0.0.1"  # Replace here with your computer's IP address
                NAO_IP = "nao.local" # Replace here with your NAOqi's IP address
                PORT = 9559
                
                # ALMemory variable where the ALVisionRecognition module
                # outputs its results.
                memValue = "PictureDetected"
                
                class myModule(ALModule):
                """python class myModule test auto documentation"""
                
                def dataChanged(self, strVarName, value, strMessage):
                    """callback when data change"""
                    print "datachanged", strVarName, " ", value, " ", strMessage
                    global count
                    count = count-1
                
                broker = ALBroker("pythonBroker", PC_IP,9999, NAO_IP,9559)
                pythonModule = myModule(moduleName)    
                
                # Create a proxy to ALMemory
                try:
                memoryProxy = ALProxy("ALMemory", NAO_IP, PORT)
                except RuntimeError,e:
                print "Error when creating ALMemory proxy:"
                exit(1)
                
                # Have the python module called back when picture recognition results change.
                try:
                memoryProxy.subscribeToEvent(memValue, moduleName, "dataChanged")
                except RuntimeError,e:
                print "Error when subscribing to event"
                exit(1)
                
                # Let the picture recognition run for a little while.
                while count>0:
                time.sleep(5)
                
                # Indicate from the event
                try:
                memoryProxy.unsubscribeToEvent(memValue, moduleName)
                except RuntimeError,e:
                print "Error when subscribing to event"
                exit(1)  
                
                print 'end of vision_recognition python script'
            

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