def visit_match_op_binary(self, binary, operator, **kw):
        if "postgresql_regconfig" in binary.modifiers:
            regconfig = self.render_literal_value(
                binary.modifiers['postgresql_regconfig'],
                sqltypes.STRINGTYPE)
            if regconfig:
                return "%s @@ to_tsquery(%s, %s)" % (
                    self.process(binary.left, **kw),
                    regconfig,
                    self.process(binary.right, **kw)
                )
        return "%s @@ to_tsquery(%s)" % (
            self.process(binary.left, **kw),
            self.process(binary.right, **kw)
        )
dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/sqlalchemy/dialects/postgresql/base.py/PGCompiler.visit_match_op_binary/original