Opening sage session

[Eloitor]

I would like to be able to open a sage session using C-c C-v C-z in a sage source block. When I use this shortcut, it currently shows "Error: no org-babel-initiate-session function for sage".

[EmmanuelCharpentier]

Opening a Sage sessiohas other issues :my crrent practice is to open a Sage session fromemacs prompt (M-x run-sage), *then* open my .org` file.

To be spruced up a bit...