`eval(the_string, globals = {"__builtins__":None}, locals = {})`
should do it. This removes access from all functions. Add any
functions that are needed by adding them to the "locals" dictionary.
As stated in:
http://stackoverflow.com/questions/661084/security-of-pythons-eval-on-untrusted-string
By "Sage shell", I meant a cell in a worksheet if you're using the
Notebook, or the ipython interface of `sage`. Sorry for any confusion.
On Sep 7, 12:12 am, "J. Cooley" wrote:
> Thanks for your response. What and where is the Sage shell?
>
> Cheers.
--~--~-~--~~~---~
You need to `from sage.schemes.elliptic_curves.ell_curve_isogeny
import ` first on the Sage shell, since
`sage.schemes.elliptic_curves.ell_field` is not automatically
imported.
On Sep 6, 11:31 pm, "J. Cooley" wrote:
> Firstly, sorry if my questions are stupid; I only started using sage 3
> weeks
