diff --git a/tests/python_client/common/milvus_sys.py b/tests/python_client/common/milvus_sys.py
index 082c59c006..1b785fb33a 100644
--- a/tests/python_client/common/milvus_sys.py
+++ b/tests/python_client/common/milvus_sys.py
@@ -72,3 +72,7 @@ class MilvusSys:
     def nodes(self):
         """get all the nodes in Milvus deployment"""
         return json.loads(self.sys_info.response).get('nodes_info')
+
+    @property
+    def get_nodes_by_type(self, node_type=None):
+        return NotImplementedError