diff --git a/tests/pytest/functions/function_session.py b/tests/pytest/functions/function_session.py
index 9165440737e23cb72847c38af6ff4415d75d9a1c..21b6d088ffd45c3a0e1b867335b8a36d834b93cc 100644
--- a/tests/pytest/functions/function_session.py
+++ b/tests/pytest/functions/function_session.py
@@ -68,6 +68,7 @@ class TDTestCase:
         tdSql.checkData(0, 1, 1)
         tdSql.checkData(1, 1, 1)
 
+
         tdSql.query("select first(col1), last(col2) from test1 session(ts, 1s)")  
         tdSql.checkRows(2)
         tdSql.checkData(0, 1, 1)