(self)
Returns a quality measurement of the current block of postings,
        according to the current weighting algorithm. Raises
        ``NoQualityAvailable`` if the matcher or weighting do not support
        quality measurements.
Returns a quality measurement of the current block of postings,
        according to the current weighting algorithm. Raises
        ``NoQualityAvailable`` if the matcher or weighting do not support
        quality measurements.
Returns a quality measurement of the current block of postings according to the current weighting algorithm . Raises NoQualityAvailable if the matcher or weighting do not support quality measurements .
def block_quality(self):
        """Returns a quality measurement of the current block of postings,
        according to the current weighting algorithm. Raises
        ``NoQualityAvailable`` if the matcher or weighting do not support
        quality measurements.
        """

        raise NoQualityAvailable(self.__class__)
def block_quality ( self ) : raise NoQualityAvailable ( self . __class__ )