Automatically attach file on starting shell?

asked 2020-01-19 17:20:47 +0200

hwong557
33 ●1 ●6

updated 2020-01-19 17:21:39 +0200

Is there a way to run sage from command line and have sage automatically run a command (such as attaching a file)? I do not want to put the attach command in the init.sage file, because I want sage to only attach my code when I am working on my project, not for general use.

Perhaps another way of thinking about is how can I run a sage script, and have it exit into an interactive shell? Then I would be able to run sage mycode.sage, and have the desired behavior.

Thank you.

answered 2020-01-19 18:59:36 +0200

Sébastien
3153 ●5 ●39 ●85 http://www.slabbe.org/

updated 2020-01-19 19:00:10 +0200

In the file ~.sage/init.sage, you may write the following code:

import os
if os.path.exists('init.sage'):
    %runfile init.sage

which will automatically run the file init.sage if there is such a file in the current folder. Then, you can put your desired code in that file in your working directory which will get run first when you start sage.

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I think you may want to use a different name in the %runfile command; otherwise starting up sage with ~/.sage as current directory could lead to an unpleasant experience.

nbruin ( 2020-01-19 20:09:24 +0200 )edit

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