def get_symbols(self, site='Pro'):
        """
        获取支持的交易对
        :param site:
        :return:
        """
        assert site in ['Pro', 'HADAX']
        params = {}
        path = f'/v1{"/" if site == "Pro" else "/hadax/"}common/symbols'

        def _wrapper(_func):
            @wraps(_func)
            def handle():
                _func(api_key_get(params, path))

            return handle

        return _wrapper