fix bug

py-client/libs/state.py

@@ -87,6 +87,10 @@ class State:
         db.row_factory = sqlite3.Row
         return db
 
+    def get_by_code(self,code: str) -> dict:
+        s = self.state.get(code,{})
+        return s
+
     def load(self) -> None:
         """缓存状态表和成交记录。"""
         self.load_state()