fix bug

py-client/libs/order.py

@@ -35,7 +35,6 @@ class OrderBook:
     def __init__(
         self, order_prefix: str, lock_timeout_sec: int = 180, cancel_timeout_sec: float = 30
     ) -> None:
-        self.order_prefix = order_prefix
         self.lock_timeout_sec = max(1, lock_timeout_sec)
         self.cancel_timeout_sec = timedelta(seconds=cancel_timeout_sec)
         self.data: list[OrderItem] = []
@@ -45,9 +44,9 @@ class OrderBook:
         )
         self.mutex = Lock()
 
-    def new_order_id(self, side: str) -> str:
+    def new_order_id(self,prefix:str, side: str) -> str:
         """生成带策略前缀的本地订单号。"""
-        return f"{self.order_prefix}-{side}-{secrets.token_hex(10)}"
+        return f"{prefix}-{side}-{secrets.token_hex(10)}"
 
     def busy(self, code: str, side: str) -> bool:
         """判断证券是否存在仍在处理中的同方向委托。"""