How to load and use a PARI/GP script in Sage notebook? I don't know whether this is the correct place to ask such a question, but I am dealing with this problem for a couple of days.                 
Take for example the script http://math.stanford.edu/~stange/scripts/tate_via_nets.gp.      
What I do is: copy the script to a txt file and name it tate_via_nets.gp. Then I go to my sage notebook and choose above the option 'gp'. In the first block I write 
\r filename
where filename is the whole path of the file tate_via_nets.gp (so C:....\tate_via_nets.gp) and "evaluate" it. But then I get the error
*   at top-level: read("/home/sage/.sa
  *                 ^--------------------
* read: error opening input file:
`C:\Users...\tate_via_nets.gp'.
If you see me doing things wrongly please let me know it :-) 
I am working with sage 4.7.1
Thanks
EDIT: I have changed the "source" of the problem

In https://cloud.sagemath.com do this:


*

*Create a project and a new Sage worksheet in the project.

*Paste in this line and press shift+enter:
    gp.read(get_remote_file('http://math.stanford.edu/~stange/scripts/tate_via_nets.gp'))

*In another cell, type this to confirm that you've loaded the code.
%gp
tate_pairing_alg 


*Use it -- type %gp at the start of a cell to use gp.
