update

tests/system-test/2-query/Now.py

-from tarfile import SYMTYPE
-from time import sleep
-from tkinter import E
-import taos
-import sys
+
+
 from util.dnodes import *
 from util.log import *
 from util.sql import *

tests/system-test/2-query/To_iso8061.py

 from time import sleep
-import taos
+
 from util.log import *
 from util.sql import *
 from util.cases import *
 
-import os
+
 
 
 class TDTestCase:

tests/system-test/2-query/Today.py

-from tarfile import SYMTYPE
-from time import sleep
-from tkinter import E
-import taos
-import sys
+
+
 from util.dnodes import *
 from util.log import *
 from util.sql import *

tests/system-test/2-query/timezone.py

-from pytz import timezone
-import taos
+
 from util.log import *
 from util.sql import *
 from util.cases import *