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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):
 """Read the state of the GPIO. Returns: bool: ``True`` for high state, ``False`` for low state. Raises: GPIOError: if an I/O or OS error occurs. """

        # Read value
        try:
            buf = os.read(self._fd, 2)
        except OSError as e:
            raise GPIOError(e.errno, "Reading GPIO: " + e.strerror)

        # Rewind
        try:
            os.lseek(self._fd, 0, os.SEEK_SET)
        except OSError as e:
            raise GPIOError(e.errno, "Rewinding GPIO: " + e.strerror)

        if buf[0] == b"0"[0]:
            return False
        elif buf[0] == b"1"[0]:
            return True

        raise GPIOError(None, "Unknown GPIO value: \"%s\"" % buf[0])