docs: update examples/python/tmq_example.py with connector repo (#17387)

* docs: update examples/python/tmq_example.py with connector repo

* Update tmq_example.py

* docs: remove tb variable after get_table_name removed
Co-authored-by: NLiu Jicong <liujicong@qq.com>

docs/examples/python/tmq_example.py

 import taos
-from taos.tmq import TaosConsumer
-consumer = TaosConsumer('topic_ctb_column', group_id='vg2')
-for msg in consumer:
-    for row in msg:
-        print(row)
+from taos.tmq import *
+
+conn = taos.connect()
+
+print("init")
+conn.execute("drop database if exists py_tmq")
+conn.execute("create database if not exists py_tmq vgroups 2")
+conn.select_db("py_tmq")
+conn.execute(
+    "create stable if not exists stb1 (ts timestamp, c1 int, c2 float, c3 binary(10)) tags(t1 int)"
+)
+conn.execute("create table if not exists tb1 using stb1 tags(1)")
+conn.execute("create table if not exists tb2 using stb1 tags(2)")
+conn.execute("create table if not exists tb3 using stb1 tags(3)")
+
+print("create topic")
+conn.execute("drop topic if exists topic_ctb_column")
+conn.execute(
+    "create topic if not exists topic_ctb_column as select ts, c1, c2, c3 from stb1"
+)
+
+print("build consumer")
+conf = TaosTmqConf()
+conf.set("group.id", "tg2")
+conf.set("td.connect.user", "root")
+conf.set("td.connect.pass", "taosdata")
+conf.set("enable.auto.commit", "true")
+
+
+def tmq_commit_cb_print(tmq, resp, offset, param=None):
+    print(f"commit: {resp}, tmq: {tmq}, offset: {offset}, param: {param}")
+
+
+conf.set_auto_commit_cb(tmq_commit_cb_print, None)
+tmq = conf.new_consumer()
+
+print("build topic list")
+
+topic_list = TaosTmqList()
+topic_list.append("topic_ctb_column")
+
+print("basic consume loop")
+tmq.subscribe(topic_list)
+
+sub_list = tmq.subscription()
+
+print("subscribed topics: ", sub_list)
+
+while 1:
+    res = tmq.poll(1000)
+    if res:
+        topic = res.get_topic_name()
+        vg = res.get_vgroup_id()
+        db = res.get_db_name()
+        print(f"topic: {topic}\nvgroup id: {vg}\ndb: {db}")
+        for row in res:
+            print(row)