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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 _get_u16(self, msb, lsb):
 """ Convert 2 bytes into an unsigned int. """

        buf = struct.pack('>BB', self._get_u8(msb), self._get_u8(lsb))
        return int(struct.unpack('>H', buf)[0])