Success! Executing sage scripts from Leo!!!

[Edward K. Ream]

It is possible to use Leo as a sage notebook (within Ubuntu, not wsl). Right now, without changing Leo!

Two, no three, Ahas make this possible:

- Leo must run within Sage.

- Everything must be installed within Sage.

- Sage prompts are really ipython prompts.

Installing Leo

I installed Leo inside Sage:

sage: !pip install leo

The first time I ran Leo I got a familiar message:

sage: !leo

qt.qpa.plugin: From 6.5.0, xcb-cursor0 or libxcb-cursor0 is needed to load the Qt xcb platform plugin.

qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found...

But now I knew what to do:

sage: !sudo apt-get install libxcb-cursor0

And now Leo worked!

sage: !leo

setting leoID from os.getenv('USER'): 'edreamleo'

Leo 6.8.1, 6.8.1 branch, build 616c868bbf

2024-07-24 05:19:21 -0500

Python 3.12.3, PyQt version 6.7.3

linux

wrote recent file: /home/edreamleo/.leo/.leoRecentFiles.txt

Executing Sage scripts within Leo

Here is a script from the Sage tutorial:

from sage.all import *

x = circle(

    (Integer(0),Integer(0)), Integer(1),

    rgbcolor=(Integer(1),Integer(1),Integer(0)))

print('x', x)

x.show()

When Leo runs inside sage we can run this script as a Leo script!! The output (in the Sage console) is:

x Graphics object consisting of 1 graphics primitive

Graphics object consisting of 1 graphics primitive

The graphic doesn't appear automatically, but I expect it will after configuring Sage's viewer.

Summary

Sage runs ipython in a separate environment, so:

- Installing packages outside Sage is futile.
- Leonine scripts can import sage only when Leo runs from within Sage.

With these insights, Leo becomes a Sage notebook!

All comments and questions are welcome.

Edward

[Edward K. Ream]

On Wednesday, October 16, 2024 at 9:08:51 AM UTC-5 Edward K. Ream wrote:

It is possible to use Leo as a sage notebook (within Ubuntu, not wsl). Right now, without changing Leo!

Some follow-on ideas about IPython:

- Running Leo from Sage may be a much better way of integrating Leo and IPython than Leo's IPython plugin.

- IPython magics and the IPython Cookbook may offer further nifty options for integrating Sage and Leo.

These are early days. The possibilities are exciting.

There is another set of possibilities to explore: running sage within vs-code. However, it seems unlikely that Leo-JS can be integrated into sage as easily as Leo itself. We shall see.

Edward