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I'm starting to work on Anaconda and I can´t open the jupyter notebook. When I try it, it gives out a application launch error, saying the following:

Traceback (most recent call last):
File "C:\Users\pc\Anaconda3\Scripts\jupyter-notebook-script.py", line 6, in 
from notebook.notebookapp import main
File "C:\Users\pc\AppData\Roaming\Python\Python37\site-packages\notebook\notebookapp.py", line 47, in 
from zmq.eventloop import ioloop
File "C:\Users\pc\AppData\Roaming\Python\Python37\site-packages\zmq\__init__.py", line 47, in 
from zmq import backend
File "C:\Users\pc\AppData\Roaming\Python\Python37\site-packages\zmq\backend\__init__.py", line 40, in 
reraise(*exc_info)
File "C:\Users\pc\AppData\Roaming\Python\Python37\site-packages\zmq\utils\sixcerpt.py", line 34, in reraise
raise value
File "C:\Users\pc\AppData\Roaming\Python\Python37\site-packages\zmq\backend\__init__.py", line 27, in 
_ns = select_backend(first)
File "C:\Users\pc\AppData\Roaming\Python\Python37\site-packages\zmq\backend\select.py", line 28, in select_backend
mod = __import__(name, fromlist=public_api)
File "C:\Users\pc\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\pc\AppData\Roaming\Python\Python37\site-packages\zmq\backend\cython\__init__.py)
MendelG
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Gabriel 13
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2 Answers2

0

This works for me, you can give it a try:

pip uninstall pyzmq

then:

pip install pyzmq

I run these commands on anaconda prompt

biak
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0

I had a similar problem with both jupyter notebook and spyder.

My way to fix this:

  1. Uninstall anaconda and python3.7(or whichever version you have installed)
  2. Delete "C:\Users\pc\AppData\Roaming\Python" Python folder
  3. Reinstall anaconda

Then, from anaconda prompt, write

jupyter notebook

or

spyder

That's it. Hope it works

ablmmcu
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