factor_loader.py 文件源码

def _merge_query_params(self, params, date=None):
        ret = ''
        for key, value in params.iteritems():
            if key == 'tenor' and pd.isnull(value):
                ret += 'tradeDate=' + date + ';'
            elif not pd.isnull(value):
                if key == Header.TENOR:
                    py_assert(date is not None, ValueError, 'date must be given if tenor is not None')
                    # unit = ''.join(re.findall('[0-9]+', params[Header.TENOR]))
                    # freq = FreqType(params[Header.TENOR][len(unit):])
                    ret += 'startDate=' + WIND_DATA_PROVIDER.forward_date(date, value,
                                                                          self.date_format) + ';endDate=' + date + ';'
                elif key == Header.FREQ and value[:3] == 'min':
                    ret += ('BarSize=' + value[3:] + ';')
                else:
                    ret += (key + '=' + str(value) + ';')
        ret = ret[:-1] + FactorLoader._check_industry_params(params.name)
        return ret