Python jupyter notebook 更新错误

Question

I've been using Juptyer Notebook for more than a year now with python3 and I recently saw through the Anaconda Navigator that an update to the 5.7.0 version was available. I installed it but the first Notebook that I tried to launch wouldn't work : I run the most simple expressions such as:

test = [1,2,3]
print(len(test))

It keeps buffering and nothing comes out of this. Additionally, when I try to define a function, the font doesn't become green and bold like always.

Then I tried to go back to the older version, and that didn't work too. Now I'm back with the up-to-date version but still doesn't work.

I'm on a Windows machine and I don't know very much about source code or precise things to look for in this case.

Answer 1

Could you please follow the below steps and share the feedback. It seems that new update installed in a different path.

Step 1:- Get an Anaconda command prompt and run jupyter notebook in it, It will probably won't work, but you could get a detail error message saying what's failing.

Step 2:- After your anaconda update, if that's left over from the older version of Anaconda. The shortcut properties might tell you what it's trying to call - there may be a wrong path to Anaconda or something wrong, so you can go to anaconda desktop shortcut, then right click on it and check the properties. And also run the %appdata% command in windows 'Run' and check the installed anaconda app data directory.

Stop 3:- If the shortcut was the issue. You can manually change the "Shortcut target" (in windows) to the following

Eg: C:\\Users\\'yourusername'\\AppData\\Local\\Continuum\\Anaconda2\\Scripts\\jupyter-notebook.exe