我让AI辅助编写了问财QMT自动交易系统

def execute_trading_strategy(self):
        """执行交易策略"""

        # 获取选股结果
        query = self.query_edit.text()
        self.log(f"🔍 执行查询: {query}")

        # 使用pywencai获取数据
        df = pywencai.get(query=query, sort_key='竞价成交金额', sort_order='desc')

        if df is None or df.empty:
            self.log("⚠️ 未找到符合条件的股票")
            return

        self.log(f"📊 找到 {len(df)} 只符合条件的股票")

        # 筛选前N只股票
        max_stocks = self.max_stocks_spin.value()
        target_stocks = df.head(max_stocks)
        #print(target_stocks)
        # 获取当前持仓
        position_df = self.trader.position()
        held_stocks = set(position_df['证券代码'].tolist()) if not position_df.empty else set()

        # 执行交易
        for _, row in target_stocks.iterrows():
            stock_code = row['股票代码']

            # 检查是否已持仓或已下单
            if stock_code in held_stocks or stock_code in self.executed_orders:
                self.log(f"⏭️ 跳过 {stock_code} (已持仓/已下单)")
                continue
            #print(row)
            # 计算买入金额
            max_amount = float(self.max_amount_edit.text())
            raw_price = row.get('最新价', row.get('close', 0))
            try:
                # 清洗数据：移除逗号/货币符号，处理空值
                clean_price = str(raw_price).replace(',', '').replace('¥', '').strip()
                price_val = float(clean_price) if clean_price else 0.0
                #print(price_val)
                if price_val <= 0:
                    self.log(f"⚠️ {stock_code} 价格无效: {price_val}")
                    continue
                #print(max_amount)
                # 计算买入数量 (100的整数倍)
                amount = min(int(max_amount // (price_val * 100)) * 100, 10000)
                #print(amount)
                if amount < 100:
                    self.log(f"⚠️ {stock_code} 买入数量不足: {amount}")
                    continue

                # 执行买入
                self.log(f"💰 尝试买入 {stock_code} {amount}股 @{price_val:.2f}")
                order_id = self.trader.buy(security=stock_code,     price=price_val,
                amount=amount)

                if order_id > 0:
                    self.executed_orders.add(stock_code)
                    self.log(f"✅ 委托成功 ID: {order_id}")
                else:
                    self.log(f"❌ 委托失败")
            except (TypeError, ValueError) as e:
                self.log(f"❌ {stock_code} 价格转换失败: {raw_price}，错误: {str(e)}")
                continue