From cf34fedfafa663ac1c5cacba6b13a82d6fbacd7c Mon Sep 17 00:00:00 2001
From: Nora <cjz741262008cjz@gmail.com>
Date: Tue, 15 Aug 2023 00:36:51 +0800
Subject: [PATCH] =?UTF-8?q?=20=20=20=20evaluate=5Fpairs=20=E5=85=BC?=
 =?UTF-8?q?=E5=AE=B9=E5=8F=82=E6=95=B0pairs=E4=B8=BA=E7=A9=BAdataframe?=
 =?UTF-8?q?=E7=9A=84=E6=83=85=E5=86=B5?=
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---
 czsc/utils/stats.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/czsc/utils/stats.py b/czsc/utils/stats.py
index 1dcff36ce..07d00a530 100644
--- a/czsc/utils/stats.py
+++ b/czsc/utils/stats.py
@@ -160,7 +160,11 @@ def evaluate_pairs(pairs: pd.DataFrame, trade_dir: str = "多空") -> dict:
     """
     from czsc.objects import cal_break_even_point
 
-    pairs = pairs.copy()
+    if pairs.empty:
+        pairs = pairs.reindex(columns=["标的代码", "策略标记", "交易方向", "开仓时间","平仓时间", "开仓价格", "平
+仓价格", "持仓K线数", "事件序列", "持仓天数", "盈亏比例"])
+    else:
+        pairs = pairs.copy()
     if trade_dir in ["多头", "空头"]:
         pairs = pairs[pairs["交易方向"] == trade_dir]
     else: