Delete rows based on value

        :param col: column name
        :type col: str
        :param val: value to delete
        :type val: any

        :example: ``ds.exclude("Col 1", "value")``

def exclude(self, col: str, val):
        """
        Delete rows based on value

        :param col: column name
        :type col: str
        :param val: value to delete
        :type val: any

        :example: ``ds.exclude("Col 1", "value")``
        """
        try:
            self.df = self.df[self.df[col] != val]
        except Exception as e:
            self.err(e, "Can not exclude rows based on value " + str(val))