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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 read(self, count):
 """ read count bytes from the unpacker and return it. Raises an UnpackException if there is not enough data in the underlying stream. """


        if not self.data:
            raise UnpackException(None, count, 0)

        buff = self.data.read(count)
        if len(buff) < count:
            raise UnpackException(None, count, len(buff))

        return buff