fix case

tests/system-test/0-others/user_control.py

@@ -167,6 +167,7 @@ class TDTestCase:
 
     def user_login(self, user, passwd):
         login_except = False
+        tdLog.printNoPrefix(login_except)
         try:
             with taos_connect(user=user, passwd=passwd) as conn:
                 cursor = conn.cursor()
@@ -174,6 +175,8 @@ class TDTestCase:
             login_except = True
             cursor = None
 
+        tdLog.printNoPrefix("end,", login_except)
+
         # with taos_connect(user=user, passwd=passwd) as conn:
         #         cursor = conn.cursor()
         # if not cursor: