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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def Write2000256List(self, arr):
 """ Write an array of 64 byte items to the stream. Args: arr (list):
 a list of 2000 items of 64 bytes in size. """

        for item in arr:
            ba = bytearray(binascii.unhexlify(item))
            ba.reverse()
            self.WriteBytes(ba)