sage/interfaces/phc.py writes tmp files into cwd

[sagetrac-mabshoff]

From _output_from_command_list:

        EXAMPLES:
            sage: from sage.interfaces.phc import *  #optional
            sage: R2.<x,y> = PolynomialRing(QQ,2)    #optional
            sage: start_sys = [(x-1)^2+(y-1)-1, x^2+y^2-1]  #optional
            sage: a = phc._output_from_command_list(['phc -m','4','n','n','n'], start_sys)#optional
            sage: os.unlink(a)#optional

The Sage library might not be writable for the user who is running doctests, so the above doctest needs to be fixed.

Cheers,

Michael

Component: doctest coverage

Issue created by migration from https://trac.sagemath.org/ticket/4590

[mwhansen]

Attachment: trac_4590.patch.gz

[mwhansen]

comment:1

Actually, the only files that get used in that function are these:

        input_filename = sage.misc.misc.tmp_filename()
        output_filename = sage.misc.misc.tmp_filename()

The doctest may have been a little misleading. The reviewer can decide if the patch should go in or the ticket should be marked as invalid.

[jasongrout]

comment:2

Either way is fine with me. Looking at the code, it seems that mhansen is right. I'd probably go with the patch so things are less confusing.

[sagetrac-mabshoff]

comment:3

Merged in Sage 3.3.alpha1