Method fetch_margin_mode

python/ccxt/binance.py:13030–13068

fetches the margin mode of a specific symbol https://developers.binance.com/docs/derivatives/usds-margined-futures/account/rest-api/Symbol-Config https://developers.binance.com/docs/derivatives/coin-margined-futures/account/rest-api/Account-Information :param str s

(self, symbol: str, params={})

        return self.parse_margin_modes(assets, symbols, 'symbol', 'swap')

    def fetch_margin_mode(self, symbol: str, params={}) -> MarginMode:
        """
        fetches the margin mode of a specific symbol

        https://developers.binance.com/docs/derivatives/usds-margined-futures/account/rest-api/Symbol-Config
        https://developers.binance.com/docs/derivatives/coin-margined-futures/account/rest-api/Account-Information

        :param str symbol: unified symbol of the market the order was made in
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :param str [params.subType]: "linear" or "inverse"
        :returns dict: a `margin mode structure <https://docs.ccxt.com/?id=margin-mode-structure>`
        """
        self.load_markets()
        market = self.market(symbol)
        subType = None
        subType, params = self.handle_sub_type_and_params('fetchMarginMode', market, params)
        response = None
        if subType == 'linear':
            request = {
                'symbol': market['id'],
            }
            response = self.fapiPrivateGetSymbolConfig(self.extend(request, params))
            #
            # [
            #     {
            #         "symbol": "BTCUSDT",
            #         "marginType": "CROSSED",
            #         "isAutoAddMargin": "false",
            #         "leverage": 21,
            #         "maxNotionalValue": "1000000",
            #     }
            # ]
            #
        elif subType == 'inverse':
            fetchMarginModesResponse = self.fetch_margin_modes([symbol], params)
            return fetchMarginModesResponse[symbol]
        else:
            raise BadRequest(self.id + ' fetchMarginMode() supports linear and inverse subTypes only')
        return self.parse_margin_mode(response[0], market)

    def parse_margin_mode(self, marginMode: dict, market=None) -> MarginMode:
        marketId = self.safe_string(marginMode, 'symbol')