Jupyter Notebook 未启动（Anaconda）

Question

当我尝试通过 Anaconda 启动 Jupyter notebook 时，我收到以下错误消息：

Traceback (most recent call last):
File "C:\Users\Michael\anaconda3\Scripts\jupyter-notebook-script.py", line 6, in 
from notebook.notebookapp import main
File "C:\Users\Michael\AppData\Roaming\Python\Python37\site-packages\notebook\notebookapp.py", line 49, in 
from zmq.eventloop import ioloop
File "C:\Users\Michael\AppData\Roaming\Python\Python37\site-packages\zmq\__init__.py", line 47, in 
from zmq import backend
File "C:\Users\Michael\AppData\Roaming\Python\Python37\site-packages\zmq\backend\__init__.py", line 40, in 
reraise(*exc_info)
File "C:\Users\Michael\AppData\Roaming\Python\Python37\site-packages\zmq\utils\sixcerpt.py", line 34, in reraise
raise value
File "C:\Users\Michael\AppData\Roaming\Python\Python37\site-packages\zmq\backend\__init__.py", line 27, in 
_ns = select_backend(first)
File "C:\Users\Michael\AppData\Roaming\Python\Python37\site-packages\zmq\backend\select.py", line 28, in select_backend
mod = __import__(name, fromlist=public_api)
File "C:\Users\Michael\AppData\Roaming\Python\Python37\site-packages\zmq\backend\cython\__init__.py", line 6, in 
from . import (constants, error, message, context,
ImportError: cannot import name 'constants' from 'zmq.backend.cython' (C:\Users\Michael\AppData\Roaming\Python\Python37\site-packages\zmq\backend\cython\__init__.py)

我该如何解决这个问题？我已经尝试过重新安装 Python 和 Jupyter（物有所值）。

Answer 1

试试：

conda uninstall pyzmq
conda install pyzmq

或

pip uninstall pyzmq
pip install pyzmq

来源：https://github.com/jupyter/notebook/issues/3435