docs: refine python tmq doc

docs/examples/python/tmq_example.py

 import taos
-from taos.tmq import *
-
-conn = taos.connect()
-
-# create database
-conn.execute("drop database if exists py_tmq")
-conn.execute("create database if not exists py_tmq vgroups 2")
-
-# create table and stables
-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)")
-
-# 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")
-
-# set consumer configure options
-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")
-conf.set("msg.with.table.name", "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)
-
-# build consumer
-tmq = conf.new_consumer()
-
-# build topic list
-topic_list = TaosTmqList()
-topic_list.append("topic_ctb_column")
-
-# subscribe consumer
-tmq.subscribe(topic_list)
-
-# check subscriptions
-sub_list = tmq.subscription()
-print("subscribed topics: ",sub_list)
-
-# start subscribe
-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)
-            tb = res.get_table_name()
-            print(f"from table: {tb}")
+from taos.tmq import TaosConsumer
+consumer = TaosConsumer('topic_ctb_column', group_id='vg2')
+for msg in consumer:
+    for row in msg:
+        print(row)

docs/zh/07-develop/07-tmq.mdx

@@ -88,6 +88,110 @@ void close() throws SQLException;
 ```
 
 </TabItem>
+
+</TabItem>
+<TabItem value="python" label="python">
+```python
+class TaosConsumer():
+    DEFAULT_CONFIG = {
+        'group.id',
+        'client.id',
+        'enable.auto.commit',
+        'auto.commit.interval.ms',
+        'auto.offset.reset',
+        'msg.with.table.name',
+        'experimental.snapshot.enable',
+        'enable.heartbeat.background',
+        'experimental.snapshot.batch.size',
+        'td.connect.ip',
+        'td.connect.user',
+        'td.connect.pass',
+        'td.connect.port',
+        'td.connect.db',
+        'timeout'
+    }
+
+    def __init__(self, *topics, **configs):
+        self._closed = True
+        self._conf = None
+        self._list = None
+        self._tmq = None
+
+        keys = list(configs.keys())
+        for k in keys:
+            configs.update({k.replace('_','.'): configs.pop(k)})
+
+        extra_configs = set(configs).difference(self.DEFAULT_CONFIG)
+        if extra_configs:
+            raise TmqError("Unrecognized configs: %s" % (extra_configs,))
+        
+        self._conf = tmq_conf_new()
+        self._list = tmq_list_new()
+
+        # set poll timeout
+        if 'timeout' in configs:
+            self._timeout = configs['timeout']
+            del configs['timeout']
+        else:
+            self._timeout = 0
+
+        # check if group id is set
+
+        if 'group.id' not in configs:
+            raise TmqError("missing group.id in consumer config setting")
+
+        for key, value in configs.items():
+            tmq_conf_set(self._conf, key, value)
+
+        self._tmq = tmq_consumer_new(self._conf)
+        
+        if not topics:
+            raise TmqError("Unset topic for Consumer")
+        
+        for topic in topics:
+            tmq_list_append(self._list, topic)
+
+        tmq_subscribe(self._tmq, self._list)
+        
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        if not self._tmq:
+            raise StopIteration('TaosConsumer closed')
+        return next(self.sync_next())
+
+    def sync_next(self):
+        while 1:
+            res = tmq_consumer_poll(self._tmq, self._timeout)
+            if res:
+                break
+        yield TaosResult(res)
+    
+    def subscription(self):
+        if self._tmq is None:
+            return None
+        return tmq_subscription(self._tmq)
+
+    def unsubscribe(self):
+        tmq_unsubscribe(self._tmq)
+
+    def close(self):
+        if self._tmq:
+            tmq_consumer_close(self._tmq)
+            self._tmq = None
+    
+    def __del__(self):
+        if self._conf:
+            tmq_conf_destroy(self._conf)
+        if self._list:
+            tmq_list_destroy(self._list)
+        if self._tmq:
+            tmq_consumer_close(self._tmq)
+```
+</TabItem>
+
 </Tabs>
 
 ## 写入数据
@@ -230,6 +334,27 @@ public class MetersDeserializer extends ReferenceDeserializer<Meters> {
 ```
 
 </TabItem>
+
+</TabItem>
+<TabItem value="python" label="Python">
+
+|            参数名称            |  类型   | 参数说明                                                 | 备注                                        |
+| :----------------------------: | :-----: | -------------------------------------------------------- | ------------------------------------------- |
+|        `td_connect_ip`         | string  | 用于创建连接，同 `taos_connect`                          |                                             |
+|       `td_connect_user`        | string  | 用于创建连接，同 `taos_connect`                          |                                             |
+|       `td_connect_pass`        | string  | 用于创建连接，同 `taos_connect`                          |                                             |
+|       `td_connect_port`        | string  | 用于创建连接，同 `taos_connect`                          |                                             |
+|           `group_id`           | string  | 消费组 ID，同一消费组共享消费进度                        | **必填项**。最大长度：192。                 |
+|          `client_id`           | string  | 客户端 ID                                                | 最大长度：192。                             |
+|      `auto_offset_reset`       | string  | 消费组订阅的初始位置                                     | 可选：`earliest`, `latest`, `none`(default) |
+|      `enable_auto_commit`      | string  | 启用自动提交                                             | 合法值：`true`, `false`。                   |
+|   `auto_commit_interval_ms`    | string  | 以毫秒为单位的自动提交时间间隔                           |                                             |
+| `enable_heartbeat_background`  | string  | 启用后台心跳，启用后即使长时间不 poll 消息也不会造成离线 | 合法值：`true`, `false`                     |
+| `experimental_snapshot_enable` | string  | 从 WAL 开始消费，还是从 TSBS 开始消费                    | 合法值：`true`, `false`                     |
+|     `msg_with_table_name`      | string  | 是否允许从消息中解析表名                                 | 合法值：`true`, `false`                     |
+
+</TabItem>
+
 </Tabs>
 
 上述配置中包括 consumer group ID，如果多个 consumer 指定的 consumer group ID 一样，则自动形成一个 consumer group，共享消费进度。
@@ -262,6 +387,14 @@ consumer.subscribe(topics);
 
 </TabItem>
 
+</TabItem>
+<TabItem value="python" label="Python">
+```python
+consumer = TaosConsumer('topic_ctb_column', group_id='vg2')
+```
+</TabItem>
+
+
 </Tabs>
 
 ## 消费
@@ -294,6 +427,17 @@ while(running){
 ```
 
 </TabItem>
+
+</TabItem>
+<TabItem value="python" label="Python">
+```python
+for msg in consumer:
+    for row in msg:
+        print(row)
+```
+</TabItem>
+
+
 </Tabs>
 
 ## 结束消费
@@ -322,6 +466,19 @@ consumer.unsubscribe();
 consumer.close();
 ```
 
+</TabItem>
+
+</TabItem>
+<TabItem value="python" label="Python">
+
+```python
+/* 取消订阅 */
+consumer.unsubscribe();
+
+/* 关闭消费 */
+consumer.close();
+```
+
 </TabItem>
 </Tabs>