How to change Juypyter notebook default working directory - jupyter-notebook

I'm trying to change the default working directory for Jupyter notebooks (anaconda installation). I've looked up many different answers, most of which focus on changing the jupyter_notebook_config.py file, but none of those work.
Some of the things i've tried:
This medium article
This github issue (bottom reply)
This
This too
No matter what I try, whenever I start jupyter notebook the directory I see is C:\Users\me.
I admit part of the problem is that I'm not great with command line things which makes some of the answers difficult to understand.

If you run the Jupyter Notebook from the Windows Start Menu then you have to change the command running Jupyter Notebook in the shortcut. Right click on the Start Menu on the shortcut, open file location, right click on the Jupyter Notebook shortcut, select Properties, and in the Terget Textbox, change the "%USERPROFILE%" part in what you wand or if you have changed the Jupyter config file, delete this part.

Related

Where does Jupyter Notebook save files?

So I'm just beginning my programming/coding journey. I've downloaded Anaconda and made a shortcut for Jupyter Notebook on my desktop. I tried using my first file the other day, and I'm not sure where it's being saved to. Also, I basically don't want Jupyter to save any Notebook I do once I close the Notebook, unless I specifically save it myself - I just use it for 'working out' if you like.
Here is the image showing what I mean
Like, where is that untitled.ipynb file being saved? And, how can I adjust my settings in Jupyter Notebook such that these files aren't saved and are discarded automatically so I can use them as I describe just for 'working out'?
By default the ipynb files are stored to your user profile:
C:\Users\yourlogin
How to disable autosave has already been described here:
Turn Off Autosave in IPython Notebook
I don't recommend doing that.

Jupyter notebook seems to remember previous path (!pwd) after being moved to a different directory?

I initially had a notebook in one directory in AWS SageMaker JupyterLab, say /A, but then moved it into /A/B. However, when I run !pwd in a jupyter notebook cell, I still get /A. This happens even when I press 'restart kernel'. How does the notebook remember this, and is there a way to prevent or reset this?
Thanks
I was actually using AWS SageMaker, and restarting the kernel from the toolbar was not enough. I needed to restart the kernel session, by pressing 'shut down' in the "Running terminals and kernels" section on the left navigation.
They are currently discussing warning users about the need to restart the kernel when a notebook is moved.

Table of Contents disappeared in Jupyter Notebook

Currently, a jupyter notebook does not show the lateral table of contents. All the other notebooks do.
In fact, for that notebook under menu->edit the nbextensions config disappeared, so, it looks like that notebook does not load the extension.
My jupyter version is 4.4.0.
How to fix that notebook?
I found the solution to this problem. All those advises like "close and then re-open", "clean output of the notebook" or "re-install extensions" won't work. The problem is in the javascript load timeouts.
In firefox press F12 and press on the red icon in the top right corner - you will see that you have an error
Load timeout for modules:
custom/custom,nbextensions/nbextensions_configurator/config_menu/main,
bla-bla-bla...
How to solve:
close the notebook in jupyter, open your ipynb file in any text editor, go to the end of it - you will find "metadata" section. Add the line
"setTimeout": 120
create a file ~/.jupyter/custom/custom.js if you don't have it (I have Linux, where it is in Windows - I have no idea, google for it) and put this contents into this file:
window.requirejs.config({
waitseconds: 90, // default is 30s
});
This page describes the problem in detail:
https://github.com/ipython-contrib/jupyter_contrib_nbextensions/issues/1195
In my case, disabling my ad-blocker brought the table of contents back.
Apparently, all it needs is to shutdown the notebook. After restarting it, all works fine. I suppose that problem happens when the notebook has been closed wrongly without the proper "close and halt" procedure.
My solution in these cases is, make a copy (File <Make a Copy), delete the original notebook and rename the copy (File <Rename)
For me it seems that one of the following steps worked:
Update all packages and jupyter notebook to the latest version using conda
Uninstall then install again the nbextensions configurator
Reboot the computer
For me the reason was 22 emojis in the headers, deleting 5 of them was enough for firefox to get toc back with no reloading and kernel operations.
I have the problem with Jupyter notebook version 6.1.4. After installing nbextensions and enabling extension "Table of Contents (2)" (as "toc" and "toc2" don't work), I cannot obtain the TOC of an a notebook (2.8 MB), while new notebooks have a table of contents.
Reloading, reopening, restarting jupyter does not help, even after a long wait (> 15 min).
I have tried with browsers Mozilla Firefox version 83 and Chromium version 87.
However, a workaround is to create a new notebook (with TOC), then copy all cells from old notebook to new notebook. In order to do this, this might be useful:
how to copy cells from notebook to notebook and
how to select all cells.
Actually I could not copy all cells at once, I had to do three partial copies.
Alas, my method is not only painful but also ineffective in the long term, as the TOC disappeared again.
Restarting the computer worked or did not work.
Opening a small notebook with a table of content and reloading the big notebook worked or did not work.
The problem concerns all Nbextensions, they are just not active for the big notebook. A Javascript console is shown in Google Chrome with Control Shift J.
Error: Load timeout for modules:
nbextensions/nbextensions_configurator/config_menu/main,nbextensions/init_cell/main,nbextensions/spellchecker/main,nbextensions/toc2/main,nbextensions/jupyter-js-widgets/extension

jupyter notebook takes forever to open and then pages unresponsive - [MathJax] issue

I'm trying to open a jupyter notebook and it takes a long time and I see at the bottom it's trying to load various [MathJax] extension, e.g. at the bottom left of the chrome browser it says:
Loading [MathJax]/extensions/safe.js
Eventually, the notebook loads, but it's frozen and then at the bottom left it keeps showing that it's trying to load other [MathJax] .js files.
Meanwhile, the "pages unresponsive do you want to kill them" pop up keeps popping up.
I have no equations or plots in my notebook so I can't understand what is going on. My notebook never did this before.
I googled this and some people said to delete the ipython checkpoints. Where would those be? I'm on Mac OS and using Anaconda.
conda install -c conda-forge nbstripout
nbstripout filename.ipynb. Make sure that there is no whitespace in the filename.
I had a feeling that the program in my Jupyter notebook was stuck trying to produce some output, so I restarted the kernel and cleared output and that seemed to do the trick!
If Jupyter crashes while opening the ipynb file, try "using nbstripout to clear output directly from the .ipynb file via command line"(bndwang). Install with pip install nbstripout
I was having the same problem with jupyter notebook. My recommendations to you are as follows:
First, check the size of the .ipynb file you are trying to open. Probably the file size is in MB and is large. One of the reasons for this might be the output of a dataset that you previously displayed all rows.
For example;
In order to check the dataset, sometimes I use pd.set_option('display.max_rows', None) instead of the .head() function. And so I view all the rows in the data set.
The large number of outputs increases the file size, making the notebook slower. Try to delete such outputs.
I think this will solve your problem.
Here restarting your kernel will not help. Instead use nbstripout to strip the output from command line.
Run this command -> nbstripout FILE.ipynb
Install nbstripout if it is not there
https://pypi.org/project/nbstripout/
It happened to me the time I decided to print a matrix for 100000 times. The notebook file became 150MB and Jupyter (in Chrome) was not able to open it: it said all the things you experienced and then the page died saying it was "OutOfMemory".
I solved the issue opening it in Visual Studio Code, there is a button "Clear All Output", then I saved the notebook again and it was back to some hundreds of KB, which I could open normally.
If you don't have Visual Studio Code installed, you can open the notebook with another editor (gedit if you use Linux or Notepad++ in Windows) and try to delete the output cells. This is more tricky since you have to pay a lot of attention in what you are deleting, otherwise the notebook will stop working.

Jupyter Folder Full

I recently downloaded Anaconda on my Windows and am trying to use the Jupyter notebook. However, when I open Jupyter, the it seems to be full of odd files.
Odd Files
I have tried to change the Jupyter home directory by changing the "Start in" in the Jupyter file but the home directory remained unchanged.
Start in
There are two problems here. The first being that there are a large number of files and running the jupyter notebook makes my computer run slow. Second that when I try to add folders, I get the error that I do not have ownership to do so.
Simple fix. I was previously running jupyter from the command prompt but running it through the anaconda navigator fixed it.

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