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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 distance(self) -> ErrorValue: """Sample-to-detector distance"""

        if 'DistCalibrated' in self._data:
            dist = self._data['DistCalibrated']
        else:
            dist = self._data["Dist"]
        if 'DistCalibratedError' in self._data:
            disterr = self._data['DistCalibratedError']
        elif 'DistError' in self._data:
            disterr = self._data['DistError']
        else:
            disterr = 0.0
        return ErrorValue(dist, disterr)