class Array:
    __list = []
    
    def __init__(self):
        print "constructor"
    
    def __del__(self):
        print "destruct"
    
    def __str__(self):
        return "this self-defined array class"

    def __getitem__(self,key):
        return self.__list[key]
    
    def __len__(self):
        return len(self.__list)

    def Add(self,value):
        self.__list.append(value)
    
    def Remove(self,index):
        del self.__list[index]
    
    def DisplayItems(self):
        print "show all items---"
        for item in self.__list:
            print item
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