def get_fiat_prices(self, base=None, symbol=None):
        """Get fiat price for currency

        https://docs.kucoin.com/#get-fiat-price

        :param base: (optional) Fiat,eg.USD,EUR, default is USD.
        :type base: string
        :param symbol: (optional) Cryptocurrencies.For multiple cyrptocurrencies, please separate them with
                       comma one by one. default is all
        :type symbol: string

        .. code:: python

            prices = client.get_fiat_prices()

        :returns: ApiResponse

        .. code:: python

            {
                "BTC": "3911.28000000",
                "ETH": "144.55492453",
                "LTC": "48.45888179",
                "KCS": "0.45546856"
            }

        :raises: KucoinResponseException, KucoinAPIException

        """

        data = {}

        if base is not None:
            data['base'] = base
        if symbol is not None:
            data['currencies'] = symbol

        return self._get('prices', False, data=data)