diff --git a/clients/python/README.MD b/clients/python/README.MD
index 396f670..ce47872 100644
--- a/clients/python/README.MD
+++ b/clients/python/README.MD
@@ -12,101 +12,7 @@ pip install --upgrade wcferry
 ```
 
 ### Demo：
-```py
-#! /usr/bin/env python3
-# -*- coding: utf-8 -*-
-
-import logging
-from threading import Thread
-from time import sleep
-
-from wcferry import Wcf
-
-logging.basicConfig(level='DEBUG', format="%(asctime)s %(message)s")
-LOG = logging.getLogger("Demo")
-
-
-def process_msg(wcf: Wcf):
-    """处理接收到的消息"""
-    while wcf.is_receiving_msg():
-        try:
-            msg = wcf.get_msg()
-        except Exception as e:
-            continue
-
-        LOG.info(msg)  # 简单打印
-
-
-def main():
-    LOG.info("Start demo...")
-    wcf = Wcf(debug=True)             # 默认连接本地服务
-
-    sleep(5)  # 等微信加载好，以免信息显示异常
-    LOG.info(f"已经登录: {True if wcf.is_login() else False}")
-    LOG.info(f"wxid: {wcf.get_self_wxid()}")
-
-    # 允许接收消息
-    # wcf.enable_recv_msg(LOG.info) # deprecated
-
-    # 允许接收消息
-    wcf.enable_receiving_msg(pyq=True)  # 同时允许接收朋友圈消息
-    Thread(target=process_msg, name="GetMessage", args=(wcf,), daemon=True).start()
-
-    # wcf.disable_recv_msg() # 当需要停止接收消息时调用
-    sleep(5)
-    ret = wcf.send_text("Hello world.", "filehelper")
-    LOG.info(f"send_text: {ret}")
-
-    sleep(5)
-    # 需要确保图片路径正确，建议使用绝对路径（使用双斜杠\\）
-    ret = wcf.send_image("https://raw.githubusercontent.com/lich0821/WeChatFerry/master/assets/QR.jpeg", "filehelper")
-    LOG.info(f"send_image: {ret}")
-
-    sleep(5)
-    # 需要确保文件路径正确，建议使用绝对路径（使用双斜杠\\）
-    ret = wcf.send_file("https://raw.githubusercontent.com/lich0821/WeChatFerry/master/README.MD", "filehelper")
-    LOG.info(f"send_file: {ret}")
-
-    sleep(5)
-    LOG.info(f"Message types:\n{wcf.get_msg_types()}")
-    LOG.info(f"Contacts:\n{wcf.get_contacts()}")
-
-    sleep(5)
-    LOG.info(f"DBs:\n{wcf.get_dbs()}")
-    LOG.info(f"Tables:\n{wcf.get_tables('db')}")
-    LOG.info(f"Results:\n{wcf.query_sql('MicroMsg.db', 'SELECT * FROM Contact LIMIT 1;')}")
-
-    # 需要真正的 V3、V4 信息
-    # wcf.accept_new_friend("v3", "v4")
-
-    # 添加群成员，填写正确的群 ID 和成员 wxid
-    # ret = wcf.add_chatroom_members("chatroom id", "wxid1,wxid2,wxid3,...")
-    # LOG.info(f"add_chatroom_members: {ret}")
-
-    # 删除群成员，填写正确的群 ID 和成员 wxid
-    # ret = wcf.del_chatroom_members("chatroom id", "wxid1,wxid2,wxid3,...")
-    # LOG.info(f"add_chatroom_members: {ret}")
-
-    # 获取群成员
-    # members = wcf.get_chatroom_members('xxxxxxxx@chatroom')
-    # LOG.info(f"get_chatroom_members: {members}")
-
-    # 获取群成员名片
-    # alias = wcf.get_alias_in_chatroom("wxid_xxxxxxxx", "xxxxxxxx@chatroom")
-    # LOG.info(f"get_alias_in_chatroom: {alias}")
-
-    sleep(5)
-    wcf.refresh_pyq(0)  # 刷新朋友圈第一页
-    # wcf.refresh_pyq(id)  # 从 id 开始刷新朋友圈
-
-    # 一直运行
-    wcf.keep_running()
-
-
-if __name__ == "__main__":
-    main()
-
-```
+参考 [WeChatRobot](https://github.com/lich0821/WeChatRobot) 和上面的文档。
 
 |![碲矿](https://raw.githubusercontent.com/lich0821/WeChatFerry/master/assets/TEQuant.jpg)|![赞赏](https://raw.githubusercontent.com/lich0821/WeChatFerry/master/assets/QR.jpeg)|
 |:-:|:-:|
@@ -137,8 +43,8 @@ python -m grpc_tools.protoc --python_out=. --proto_path=../../../WeChatFerry/rpc
 ```
 
 ## 版本更新
-### 39.0.3.0 (2023.09.28)
-* 修复登录账号昵称超长报错问题
+### 39.0.4.0 (2023.11.21)
+* 下载图片、文件和视频
 
 <details><summary>点击查看更多</summary>
 
@@ -171,6 +77,6 @@ python -m grpc_tools.protoc --python_out=. --proto_path=../../../WeChatFerry/rpc
 * 删除群成员
 * 解密图片
 * 获取朋友圈消息
-* 某功能（Breaking Change）
+* 下载图片、文件、视频
 
 </details>
diff --git a/clients/python/wcferry/client.py b/clients/python/wcferry/client.py
index 5f4622a..bbcd24f 100644
--- a/clients/python/wcferry/client.py
+++ b/clients/python/wcferry/client.py
@@ -1,7 +1,7 @@
 #! /usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-__version__ = "39.0.3.0"
+__version__ = "39.0.4.0"
 
 import atexit
 import base64