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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 byte(self):
 """Return a byte representation of ControlFlags."""

        flags = int(self._in_use) << 7 \
            | int(self._controller) << 6 \
            | int(self._bit5) << 5 \
            | int(self._bit4) << 4 \
            | int(self._used_before) << 1
        return flags