diff --git a/docs-examples/python/subscribe_demo.py b/docs-examples/python/subscribe_demo.py
index bb71a62344e97d84b957e4895324600f6a6df97d..db9d49c3f4f8122634800c02a683d4cb022a7ba0 100644
--- a/docs-examples/python/subscribe_demo.py
+++ b/docs-examples/python/subscribe_demo.py
@@ -27,12 +27,12 @@ def query_callback(p_sub, p_result, p_param, code):
 
 
 if __name__ == '__main__':
-    conn = taos.connect(host="192.168.0.101",user="root",password="taosdata")
+    conn = taos.connect()
     restart = True
     topic = "topic-meter-current-bg"
-    sql = "select * from test.meters where current > 10"  # Error sql
+    sql = "select * from power.meters where current > 10"  # Error sql
     interval = 2000  # consumption interval in microseconds.
-    _ = conn.subscribe(restart, topic, sql, interval)
+    _ = conn.subscribe(restart, topic, sql, interval, query_callback)
     # Note: we received the return value as _ above, to avoid the TaosSubscription object to be deleted by gc.
     while True:
         time.sleep(10)  # use Ctrl + C to interrupt
diff --git a/output.txt b/output.txt
deleted file mode 100644
index a27235060942e90f8dd65ef6d612b8f87d99e183..0000000000000000000000000000000000000000
--- a/output.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-[06/13 14:00:51.480051] INFO: start creating 100 table(s) with 8 thread(s)
-Spent 0.2650 seconds to create 100 table(s) with 8 thread(s), already exist 0 table(s), actual 100 table(s) pre created, 0 table(s) will be auto created
-Spent 0.0251 seconds to insert rows: 20000, affected rows: 20000 with 8 thread(s) into test 796527.14 records/second
-
-insert delay, min:  0.16ms, avg:  0.96ms, p90:  1.50ms, p95:  3.00ms, p99: 10.50ms, max: 10.50ms
-