From 844287ff3b0d68c37da765a4cbdf00a6a94fd94c Mon Sep 17 00:00:00 2001
From: zengbin93 <zeng_bin8888@163.com>
Date: Tue, 31 Dec 2024 20:07:39 +0800
Subject: [PATCH] 0.9.62 fix Optional

---
 czsc/traders/cwc.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/czsc/traders/cwc.py b/czsc/traders/cwc.py
index 8d5a66b5d..df979e329 100644
--- a/czsc/traders/cwc.py
+++ b/czsc/traders/cwc.py
@@ -162,7 +162,7 @@ def set_meta(
     memo="",
     logger=loguru.logger,
     overwrite=False,
-    db: ch.driver.Client | None = None,
+    db: Optional[Client] = None,
 ):
     """设置策略元数据