使用nodriver 0.37时遇'NoneType'无'closed'属性错误求助

环境与安装步骤 #

• Python版本：3.11
• nodriver版本：0.37
• 安装操作：

python3.11 -m venv venv
source venv/bin/activate
pip install nodriver

测试代码 #

import nodriver as uc

async def main():
    browser = await uc.start()
    page = await browser.get('https://www.nowsecure.nl')

if __name__ == '__main__':
    uc.loop().run_until_complete(main())

报错信息 #

python main.py      
Traceback (most recent call last):
  File "/Users/mascai/root_folder/dev/projects/54_nodriver/main.py", line 11, in <module>
    uc.loop().run_until_complete(main())
  File "/opt/homebrew/Cellar/python@3.11/3.11.9_1/Frameworks/Python.framework/Versions/3.11/lib/python3.11/asyncio/base_events.py", line 654, in run_until_complete
    return future.result()
           ^^^^^^^^^^^^^^^
  File "/Users/mascai/root_folder/dev/projects/54_nodriver/main.py", line 5, in main
    browser = await uc.start()
              ^^^^^^^^^^^^^^^^
  File "/Users/mascai/root_folder/dev/projects/54_nodriver/venv/lib/python3.11/site-packages/nodriver/core/util.py", line 96, in start
    return await Browser.create(config)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/mascai/root_folder/dev/projects/54_nodriver/venv/lib/python3.11/site-packages/nodriver/core/browser.py", line 91, in create
    await instance.start()
  File "/Users/mascai/root_folder/dev/projects/54_nodriver/venv/lib/python3.11/site-packages/nodriver/core/browser.py", line 394, in start
    await self.connection.send(cdp.target.set_discover_targets(discover=True))
  File "/Users/mascai/root_folder/dev/projects/54_nodriver/venv/lib/python3.11/site-packages/nodriver/core/connection.py", line 412, in send
    if not self.websocket or self.closed:
                             ^^^^^^^^^^^
  File "/Users/mascai/root_folder/dev/projects/54_nodriver/venv/lib/python3.11/site-packages/nodriver/core/connection.py", line 368, in __getattr__
    return getattr(self.target, item)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'closed'
successfully removed temp profile /var/folders/t6/7jk0v3817zb2_xfb6bf0vxpc0000gn/T/uc_tedc5epz

解决建议 #

1. 指定浏览器路径：手动指定Chrome/Chromium的可执行文件路径，避免自动查找失败：

browser = await uc.start(browser_path="/Applications/Google Chrome.app/Contents/MacOS/Google Chrome")

（根据你的系统实际安装路径调整）

2. 调整nodriver版本：0.37版本可能存在兼容性bug，尝试降级到0.36版本：

pip install nodriver==0.36

或者直接升级到最新稳定版：

pip install --upgrade nodriver

3. 检查浏览器版本兼容性：确保本地Chrome/Chromium版本在114以上，可通过终端执行google-chrome --version（macOS/Linux）查看版本号，版本过低则升级浏览器。

4. 禁用沙箱模式：添加no_sandbox=True参数启动浏览器：

browser = await uc.start(no_sandbox=True)

5. 替换异步循环方式：改用标准asyncio的启动方式，替代nodriver自带的loop：

import asyncio
import nodriver as uc

async def main():
    browser = await uc.start()
    page = await browser.get('https://www.nowsecure.nl')

if __name__ == '__main__':
    asyncio.run(main())

内容的提问来源于stack exchange，提问作者mascai