I'm in the lab now experimenting. Executing
gap._eval_using_file_cutoff = 1000
in sage mode in a notebook does solve the problem. However, putting this
line in
a file named init.sage in the .sage directory does *not* work.
The lab guru here suspects that sage is not finding the init.sage file, and
hypothesizes
that this may be because sage might have some hard coded path for user's
home
directories.
Is there any way for me to test whether sage can find and run its init.sage
file?
-- Walter
On Friday, June 29, 2012 1:07:40 PM UTC-5, Ivan Andrus wrote:
>
> On Jun 29, 2012, at 6:54 PM, Walter Carlip wrote:
>
> This would, at least, be a relatively simple command to enter, though I
> don't like the idea of students having to switch
> back and forth from "sage" to "gap". (Even my tutors kept coming for help
> in our practice session, only to realize they
> had somehow switched to "sage". The drop-down menu for this switch is not
> easily accessible if you have a long
> worksheet.)
>
> In any case, I did try again (both set to "sage" and to "gap") and got
> the reply:
>
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "_sage_input_6.py", line 10, in <module>
> exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8
> -*-\\n" +
> _support_.preparse_worksheet_cell(base64.b64decode("Z2FwLmV2YWwoLi4uLiwgYWxsb3dfdXNlX2ZpbGU9RmFsc2Up"),globals())+"
> \\n"); execfile(os.path.abspath("___code___.py"))
> File "", line 1, in <module>
>
> File
> "/private/var/folders/XY/XY6U7DQjGfyP4U0KWM0W-++++TI/-Tmp-/tmpcBPUqv/___code___.py",
>
> line 2
> gap.eval(Ellipsis., allow_use_file=False)
> ^
> SyntaxError: invalid syntax
>
>
> Sorry, the .... was meant to be replaced with the command you are trying
> to evaluate. something like
>
> gap.eval( 'Print("Hi\n")', allow_use_file=False)
>
> though of course that is short enough that it doesn't cause problems
> anyway.
>
> Nevertheless, it's not a solution to your problem, just a way to
> demonstrate that we know where the problem is. The solution would be to
> create the init.sage file. You can do this from inside GAP (since you
> understand it better than python) with
>
>
> #Find the correct place to put init.sage
> dotsage := Filtered(GAPInfo.SystemEnvironment,
> x-> Length(x) > 9 and x{[1..9]} = "DOT_SAGE=")[1];
> dotsage := Concatenation( dotsage{[10..Length(dotsage)]}, "init.sage" );
>
> # Write the init.sage file -- WARNING -- this overwrites it completely!
> FileString( dotsage, "gap._eval_using_file_cutoff = 1000\n");
>
>
> That should eliminate any possibility of putting it in the wrong place.
>
> I just looked and the GAP interface doesn't
> respect _eval_using_file_cutoff being False to mean don't use a file.
> Anyway, setting the limit high enough should be okay.
>
> -Ivan
>
> On Friday, June 29, 2012 11:24:57 AM UTC-5, kcrisman wrote:
>>
>>
>>> I also tried executing
>>>
>>> gap._eval(...., allow_use_file=False)
>>>
>>>
>> Just gap.eval, I think.
>>
>>
>>> in the notebook, both under sage (which I thought would be correct) and
>>> under gap, and both reported back syntax
>>> errors and did not work.
>>>
>>
>
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