visualizer.py 文件源码

def get_levels(self, name):
        """
        Return a set containing all distinct values in the column 'name'.

        The values are returned in alphabetical order.

        Parameters
        ----------
        name : string
            The column name for which the unique values are requested

        Returns
        -------
        levels : list
            A unique list of all values that are contained in the specified
            data column.
        """
        return pd.unique(self._table[name].values.ravel())