def sim(self, src, tar, qval=<NUM_LIT:2>):
return super(self.__class__, self).sim(src, tar, qval, <NUM_LIT:1>, <NUM_LIT:1>)<EOL>
r"""Return the Jaccard similarity of two strings.

        Parameters
        ----------
        src : str
            Source string (or QGrams/Counter objects) for comparison
        tar : str
            Target string (or QGrams/Counter objects) for comparison
        qval : int
            The length of each q-gram; 0 for non-q-gram version

        Returns
        -------
        float
            Jaccard similarity

        Examples
        --------
        >>> cmp = Jaccard()
        >>> cmp.sim('cat', 'hat')
        0.3333333333333333
        >>> cmp.sim('Niall', 'Neil')
        0.2222222222222222
        >>> cmp.sim('aluminum', 'Catalan')
        0.0625
        >>> cmp.sim('ATCG', 'TAGC')
        0.0