最近升级到Python 3.8，并已安装jupyter。但是，当尝试运行时jupyter notebook出现以下错误：

  File "c:\users\user\appdata\local\programs\python\python38\lib\site-packages\tornado\platform\asyncio.py", line 99, in add_handler
    self.asyncio_loop.add_reader(fd, self._handle_events, fd, IOLoop.READ)
  File "c:\users\user\appdata\local\programs\python\python38\lib\asyncio\events.py", line 501, in add_reader
    raise NotImplementedError
NotImplementedError

我知道ProactorEventLoop默认情况下Windows上的Python 3.8已切换为默认设置，因此我怀疑它与此相关。

Jupyter目前不支持Python 3.8？有没有解决的办法？

注意：此问题已在 Spyder 4.1.3 中修复！

（原始问题）在 Windows 10 上检查 Python 3.8 (x64)，我在尝试设置Spyder. 注意：在干净的 Windows-10 系统上使用全新的 Python 安装可以重现该问题。但是，在 Linux 上没有这样的问题（在 debian / Mint19.x 上测试）。

起初，通过pip install spyder.

错误 #1： pywin32

启动后Spyder，它在IPython控制台窗口中说：

Traceback (most recent call last):
File "c:\users\USERNAME\appdata\local\programs\python\python38\lib\site?packages\spyder\plugins\ipythonconsole.py", line 1572, in create_kernel_manager_and_kernel_client
kernel_manager.start_kernel(stderr=stderr_handle)
File "c:\users\USERNAME\appdata\local\programs\python\python38\lib\site?packages\jupyter_client\manager.py", line 240, in start_kernel
self.write_connection_file()
File "c:\users\USERNAME\appdata\local\programs\python\python38\lib\site?packages\jupyter_client\connect.py", line 470, in write_connection_file
self.connection_file, cfg = write_connection_file(self.connection_file,
File "c:\users\USERNAME\appdata\local\programs\python\python38\lib\site?packages\jupyter_client\connect.py", line 141, in write_connection_file
with secure_write(fname) as f:
File "c:\users\USERNAME\appdata\local\programs\python\python38\lib\contextlib.py", line 113, in __enter__ …