From cf1023754afcd4f43b55e67945fea0684e0efbe6 Mon Sep 17 00:00:00 2001
From: freedakgmail <freedak.gemini@gmail.com>
Date: Wed, 22 Jul 2026 07:42:17 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BF=AE=E5=A4=8D=20smart=5Ftrade=5Feng?=
 =?UTF-8?q?ine.py=203=E5=A4=84=E9=99=A4=E9=9B=B6=E9=A3=8E=E9=99=A9?=
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- :504 buy_price 可能为0导致除零，添加 if buy_price > 0 else 0 保护
- :1006 partial_sell 日志中 pos['avg_cost'] 除零，添加 if pos['avg_cost'] else 0
- :1055 sell 日志中 pos['avg_cost'] 除零，添加 if pos['avg_cost'] else 0
---
 stock-html/services/smart_trade_engine.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/stock-html/services/smart_trade_engine.py b/stock-html/services/smart_trade_engine.py
index 73a2d9f..1c56ad5 100644
--- a/stock-html/services/smart_trade_engine.py
+++ b/stock-html/services/smart_trade_engine.py
@@ -501,7 +501,7 @@ def generate_sell_decisions(conn, user_id, config, current_prices, scan_map=None
         if current_shares <= 0:
             continue
 
-        profit_pct_now = (price - buy_price) / buy_price * 100
+        profit_pct_now = (price - buy_price) / buy_price * 100 if buy_price > 0 else 0
         days_held = pos.get('days_held', 0) or 0
         print(f"  {code} 成本{buy_price:.2f} 现价{price:.2f} 盈亏{profit_pct_now:+.1f}% 持仓{days_held}天")
         consec_up = pos.get('consecutive_up_days', 0) or 0
@@ -1003,7 +1003,7 @@ def execute_smart_trade(conn, user_id, scan_date=None):
                 log_signal(conn, user_id, today, code, pos['stock_name'],
                            'partial_sell', dec['reason'], dec['rule'],
                            price, pos['avg_cost'],
-                           (price - pos['avg_cost']) / pos['avg_cost'] * 100,
+                           (price - pos['avg_cost']) / pos['avg_cost'] * 100 if pos['avg_cost'] else 0,
                            True, price, shares)
 
                 results.append({
@@ -1052,7 +1052,7 @@ def execute_smart_trade(conn, user_id, scan_date=None):
                 log_signal(conn, user_id, today, code, pos['stock_name'],
                            'sell', dec['reason'], dec['rule'],
                            price, pos['avg_cost'],
-                           (price - pos['avg_cost']) / pos['avg_cost'] * 100,
+                           (price - pos['avg_cost']) / pos['avg_cost'] * 100 if pos['avg_cost'] else 0,
                            True, price, qty)
 
                 results.append({