def ref(self, tickers, flds, ovrds=None):
        """
        Make a reference data request, get tickers and fields, return long
        pandas DataFrame with columns [ticker, field, value]

        Parameters
        ----------
        tickers: {list, string}
            String or list of strings corresponding to tickers
        flds: {list, string}
            String or list of strings corresponding to FLDS
        ovrds: list of tuples
            List of tuples where each tuple corresponds to the override
            field and value

        Example
        -------
        >>> import pdblp
        >>> con = pdblp.BCon()
        >>> con.start()
        >>> con.ref("CL1 Comdty", ["FUT_GEN_MONTH"])

        Notes
        -----
        This returns reference data which has singleton values. In raw format
        the messages passed back contain data of the form

        fieldData = {
                FUT_GEN_MONTH = "FGHJKMNQUVXZ"
        }
        """
        ovrds = [] if not ovrds else ovrds

        logger = _get_logger(self.debug)
        if type(tickers) is not list:
            tickers = [tickers]
        if type(flds) is not list:
            flds = [flds]
        request = self._create_req('ReferenceDataRequest', tickers, flds,
                                   ovrds, [])
        logger.info('Sending Request:\n{}'.format(request))
        self._session.sendRequest(request, identity=self._identity)
        data = self._parse_ref(flds)
        data = pd.DataFrame(data)
        data.columns = ['ticker', 'field', 'value']
        return data
def ref(self, tickers, flds, ovrds=None):
        """
        Make a reference data request, get tickers and fields, return long
        pandas DataFrame with columns [ticker, field, value]

        Parameters
        ----------
        tickers: {list, string}
            String or list of strings corresponding to tickers
        flds: {list, string}
            String or list of strings corresponding to FLDS
        ovrds: list of tuples
            List of tuples where each tuple corresponds to the override
            field and value

        Example
        -------
        >>> import pdblp
        >>> con = pdblp.BCon()
        >>> con.start()
        >>> con.ref("CL1 Comdty", ["FUT_GEN_MONTH"])

        Notes
        -----
        This returns reference data which has singleton values. In raw format
        the messages passed back contain data of the form

        fieldData = {
                FUT_GEN_MONTH = "FGHJKMNQUVXZ"
        }
        """
        ovrds = [] if not ovrds else ovrds

        logger = _get_logger(self.debug)
        if type(tickers) is not list:
            tickers = [tickers]
        if type(flds) is not list:
            flds = [flds]
        request = self._create_req('ReferenceDataRequest', tickers, flds,
                                   ovrds, [])
        logger.info('Sending Request:\n{}'.format(request))
        self._session.sendRequest(request, identity=self._identity)
        data = self._parse_ref(flds)
        data = pd.DataFrame(data)
        data.columns = ['ticker', 'field', 'value']
        return data
def ref ( self , tickers , flds , ovrds = None ) : ovrds = [ ] if not ovrds else ovrds logger = _get_logger ( self . debug ) if type ( tickers ) is not list : tickers = [ tickers ] if type ( flds ) is not list : flds = [ flds ] request = self . _create_req ( 'ReferenceDataRequest' , tickers , flds , ovrds , [ ] ) logger . info ( 'Sending Request:\n{}' . format ( request ) ) self . _session . sendRequest ( request , identity = self . _identity ) data = self . _parse_ref ( flds ) data = pd . DataFrame ( data ) data . columns = [ 'ticker' , 'field' , 'value' ] return data
Make a reference data request, get tickers and fields, return long
        pandas DataFrame with columns [ticker, field, value]

        Parameters
        ----------
        tickers: {list, string}
            String or list of strings corresponding to tickers
        flds: {list, string}
            String or list of strings corresponding to FLDS
        ovrds: list of tuples
            List of tuples where each tuple corresponds to the override
            field and value

        Example
        -------
        >>> import pdblp
        >>> con = pdblp.BCon()
        >>> con.start()
        >>> con.ref("CL1 Comdty", ["FUT_GEN_MONTH"])

        Notes
        -----
        This returns reference data which has singleton values. In raw format
        the messages passed back contain data of the form

        fieldData = {
                FUT_GEN_MONTH = "FGHJKMNQUVXZ"
        }
Make a reference data request get tickers and fields return long pandas DataFrame with columns [ ticker field value ]