I have written and tested some code in a worksheet and I want to reuse it in another worksheet. How can I do it?
For e.g. I want to be able to do the following:
Worksheet 1: def tested_code_i_want_to_reuse(...): ...
Worksheet 2: tested_code_i_want_to_reuse(...)
You can write your reuseable functions into a .sage or .py file, store it anywhere on your computer (or the web), and then somewhere in the worksheet (e.g. the top), have a cell with
%auto
attach('/path/to/my/file.py')
attach will run all the code in your file, every time the file changes, so the functions in the file will be available from the worksheet.
@Felix Lawrence Okay... so how do I do this if I'm using Sage 4.7 for Windows in Virtual Box??? I don't know how the file system works at all. Thanks!
The best way to do it would be to let Virtual Box see the windows directories that you're saving the files in, and give that as the path. I don't have Windows, but on my Mac version of VirtualBox there is a Devices menu with a "Shared Folders..." item, that will set this up. Hopefully you can then work out the path of the shared folder - I guess you should ask a separate question for that, someone with more specific knowledge may be able to help.
@Felix Lawrence I'm trying what you've suggested I'm getting a weird error: NameError: name 'Integer' is not defined. However, if I simply copy paste the code into the notebook there are no errors and everything runs as suggested. Do you have any suggestions.
IMHO worksheets are good for some rapid prototyping, but what you talk about, essentially, developing your own mini-library of functions, is better done in shell.
What you can do anyway, if you control the Sage installation, is adding the Sage code you want to share between worksheets somewhere to Sage library. E.g. suppose you added a Python function my_blahblah to the file $SAGEROOT/devel/sage/sage/matrix/constructor.py Then you run sage -b to rebuild the library, and after that it is there:
sage: from sage.matrix.constructor import my_blahblah
sage: my_blahblah()
'foo'
If you want to have it available without importing, you can add this import statement to $SAGEROOT/devel/sage/sage/matrix/all.py, then this new function will be known right from the start of Sage.
Asked: 2011-09-03 10:05:20 +0100
Seen: 1,898 times
Last updated: Sep 05 '11
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