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How to set the working or current directory in the notebook?

asked 2016-08-19 23:53:59 -0600

Alasdair gravatar image

If I start sage in my directory ~/Sage/ then !pwd returns that directory. If I start a notebook though, the directory, given with

import os

is a temporary directory within the /tmp tree. And if I try to change that directory with os.chdir("/home/me/Sage") then that change doesn't seem to "stick", in that the second time I call os.getcwd() it gives me the /tmpdirectory again.

What I want to do is to run the Sage notebook in such a way that I can load files from its current working directory. I tried starting the notebook with notebook("/home/me/Sage") but it seems to make no difference. Unless of course the results of os are wrong.

How can I fix the working directory for use within the notebook?

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answered 2016-08-21 19:02:35 -0600

You should use the Jupyter notebook.

Launch it by running

$ sage -n jupyter

after cd-ing to the location you want.

This will open your browser at the page localhost:8888/tree

Then click "New" and in the pop-up menu select "SageMath 7.x".

Your browser will now be at http://localhost:8888/notebooks/Untitled.ipynb?kernel_name=sagemath.

Then type in some code in the input cells; get output cells when you evaluate them.

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Note that the Sage notebook still has some advantages over jupyter, in particular, the live documentation, and the possibility to import worksheets as .rst files.

tmonteil gravatar imagetmonteil ( 2016-08-21 20:41:51 -0600 )edit

@tmonteil, you are right. Work on support for live documentation in Jupyter notebook worksheets is ongoing at Sage trac ticket #20690 Live documentation in Jupyter using Thebe with follow-up work on further functionality at Sage trac ticket #20893 Improve live documentation in the Jupyter notebook.

slelievre gravatar imageslelievre ( 2016-08-22 08:29:43 -0600 )edit

answered 2016-08-20 05:19:40 -0600

tmonteil gravatar image

updated 2016-08-20 05:20:27 -0600

The previous trick does not work anymore. As a workaround, you can just load your stuff with absolute path:


Another possibility is to use jupyter notebook (sage -n jupyter).

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Asked: 2016-08-19 23:53:59 -0600

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Last updated: Aug 21 '16