add python example

docs/examples/python/schemaless_ws.py

@@ -41,9 +41,9 @@ def schemaless_insert():
                               database=db)
 
         conn.schemaless_insert(
-            lines=lineDemo,
-            protocol=taosws.PySchemalessProtocol.Line,
-            precision=taosws.PySchemalessPrecision.Millisecond,
+            lines = lineDemo,
+            protocol = taosws.PySchemalessProtocol.Line,
+            precision = taosws.PySchemalessPrecision.Millisecond,
             ttl=1,
             req_id=1,
         )

docs/examples/python/stmt_native.py

@@ -42,7 +42,7 @@ try:
         for j in range (numOfRow):
             timestamps.append(current + i)
             currents.append(random.random() * 30)
-            voltages.append(random.random(100, 300))
+            voltages.append(random.randint(100, 300))
             phases.append(random.random())
 
         params = taos.new_bind_params(4)
@@ -52,8 +52,7 @@ try:
         params[3].float(phases)
         stmt.bind_param_batch(params)
         stmt.execute()
-        affected = stmt.affected_rows()
-        print(f"table {tbname} insert {affected} rows.")
+        print(f"stmt insert successfully.")
 
 except Exception as err:
     print(f"Failed to insert to table meters using stmt, error: {err}") 

docs/examples/python/stmt_ws.py

@@ -41,7 +41,7 @@ try:
         for j in range (numOfRow):
             timestamps.append(current + i)
             currents.append(random.random() * 30)
-            voltages.append(random.random(100, 300))
+            voltages.append(random.randint(100, 300))
             phases.append(random.random())
 
         stmt.bind_param(
@@ -54,8 +54,9 @@ try:
         )
 
         stmt.add_batch()
-        rows = stmt.execute()
-        print(f"insert {rows} rows.")
+        stmt.execute()
+        
+        print(f"stmt insert successfully.")
         
 except Exception as err:
     print(f"Failed to insert to table meters using stmt, error: {err}") 

docs/examples/python/tmq_websocket_example.py

@@ -1,5 +1,8 @@
 #!/usr/bin/python3
 import taosws
+
+topic = "topic_meters"
+
 def prepareMeta():
     conn = None
 
@@ -29,6 +32,13 @@ def prepareMeta():
             "CREATE TABLE IF NOT EXISTS `d0` USING `meters` (groupid, location) TAGS(0, 'Los Angles')")
         assert rowsAffected == 0
 
+        # ANCHOR: create_topic
+        # create topic
+        conn.execute(
+            f"CREATE TOPIC IF NOT EXISTS {topic} AS SELECT ts, current, voltage, phase, groupid, location FROM meters"
+        )
+        # ANCHOR_END: create_topic
+
         sql = """
             INSERT INTO 
             power.d1001 USING power.meters (groupid, location) TAGS(2, 'California.SanFrancisco')
@@ -91,9 +101,9 @@ def seek_offset(consumer):
 # ANCHOR: subscribe
 def subscribe(consumer):
     try:
-        consumer.subscribe(["topic_meters"])
+        consumer.subscribe([topic])
         print("subscribe topics successfully")
-        for i in range(5):
+        for i in range(50):
             records = consumer.poll(timeout=1.0)
             if records:
                 for block in records:
@@ -110,7 +120,7 @@ def subscribe(consumer):
 # ANCHOR: commit_offset
 def commit_offset(consumer):
     try:
-        for i in range(5):
+        for i in range(50):
             records = consumer.poll(timeout=1.0)
             if records:
                 for block in records: