code: def get_balance(self):
          
          portfolio_code = self.account_config.get("portfolio_code", "ch")
          portfolio_info = self._get_portfolio_info(portfolio_code)
          asset_balance = self._virtual_to_balance(
              float(portfolio_info["net_value"])
          )  # 总资产
          position = portfolio_info["view_rebalancing"]  # 仓位结构
          cash = asset_balance * float(position["cash"]) / 100
          market = asset_balance - cash
          return [
              {
                  "asset_balance": asset_balance,
                  "current_balance": cash,
                  "enable_balance": cash,
                  "market_value": market,
                  "money_type": u"人民币",
                  "pre_interest": 0.25,
              }
          ]
docs: 获取账户资金状况
          :return: