我试图使用python 3.8版本启动安装在window10上的jupyter笔记本,但在执行此操作时出现未实现错误

nikhil kokate • 5 年前 • 1436 次点击

下面是用python 3.8版启动jupyter笔记本时的详细错误

  File "c:\users\kokat\appdata\local\programs\python\python38\lib\runpy.py", line 192, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "c:\users\kokat\appdata\local\programs\python\python38\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "C:\Users\kokat\AppData\Local\Programs\Python\Python38\Scripts\jupyter-notebook.EXE\__main__.py", line 9, in <module>
  File "c:\users\kokat\appdata\local\programs\python\python38\lib\site-packages\jupyter_core\application.py", line 266, in launch_instance
    return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
  File "c:\users\kokat\appdata\local\programs\python\python38\lib\site-packages\traitlets\config\application.py", line 657, in launch_instance
    app.initialize(argv)
  File "<c:\users\kokat\appdata\local\programs\python\python38\lib\site-packages\decorator.py:decorator-gen-7>", line 2, in initialize
  File "c:\users\kokat\appdata\local\programs\python\python38\lib\site-packages\traitlets\config\application.py", line 87, in catch_config_error
    return method(app, *args, **kwargs)
  File "c:\users\kokat\appdata\local\programs\python\python38\lib\site-packages\notebook\notebookapp.py", line 1628, in initialize
    self.init_webapp()
  File "c:\users\kokat\appdata\local\programs\python\python38\lib\site-packages\notebook\notebookapp.py", line 1407, in init_webapp
    self.http_server.listen(port, self.ip)
  File "c:\users\kokat\appdata\local\programs\python\python38\lib\site-packages\tornado\tcpserver.py", line 144, in listen
    self.add_sockets(sockets)
  File "c:\users\kokat\appdata\local\programs\python\python38\lib\site-packages\tornado\tcpserver.py", line 157, in add_sockets
    self._handlers[sock.fileno()] = add_accept_handler(
  File "c:\users\kokat\appdata\local\programs\python\python38\lib\site-packages\tornado\netutil.py", line 268, in add_accept_handler
    io_loop.add_handler(sock, accept_handler, IOLoop.READ)
  File "c:\users\kokat\appdata\local\programs\python\python38\lib\site-packages\tornado\platform\asyncio.py", line 79, in add_handler
    self.asyncio_loop.add_reader(
  File "c:\users\kokat\appdata\local\programs\python\python38\lib\asyncio\events.py", line 498, in add_reader
    raise NotImplementedError
NotImplementedError

任何帮助都将不胜感激。

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1436 次点击

文章 [ 2 ] | 最新文章 5 年前

• 1 楼

NeverNervous 5 年前

根据中的一条评论 this thread ,我通过以下方法解决了问题:

找到并打开asyncio.py文件。在我的例子中,它位于C:\ Users[用户名]\AppData\Local\Programs\Python\Python38-32\Lib\site packages\tornado\platform\
排在队伍后面 import asyncio 添加以下内容:

from sys import platform 
if platform == "win32":               
    asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy()) # python-3.8.0a4

这将强制在Windows上使用SelectorEventLoop。

• 2 楼

gdlmx 6 年前

Jupyter笔记本作为 tornado 网络服务器。你的浏览器通过一个插座连接到这个tornado服务器。

插座的I/O由tornado的 asyncio ,它依赖于 add_reader python运行时本机异步模块的实现。正如 documentation 属于 asyncio ,此方法仅在Windows中受支持 SelectorEventLoop 因此,确保在python安装中使用这种事件循环。要找出正在使用哪个eventloop实现,可以在python shell中运行以下命令:

import asyncio
print(asyncio.get_event_loop().__class__)
# Output: <class 'asyncio.windows_events._WindowsSelectorEventLoop'>

有一个正在进行的 discussion 关于允许用户更改 EventLoopPolicy 在jupyter的配置文件中。

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