Genius. All three failing scripts have "-n" in the filename, and the
renaming to "a.sage" allows the file to succeed. And the rest that do
succeed do not have a "-n."
I'll make a ticket soon unless I hear that this is known already.
Thanks, William!
Rob
On Thursday, January 29, 2015 at 8:15:27 PM UTC-8, William wrote:
>
> On Thu, Jan 29, 2015 at 8:12 PM, Rob Beezer <goo...@beezer.cotse.net
> <javascript:>> wrote:
> > I have a short chunk of Sage code that I am running from the command
> line.
> > It produces errors with newer versions of Sage, but works as intended
> with
> > older versions (producing a graphics file). Of about 20 such chunks, 3
> > appear to be failing. Is this a known problem? Should I make a ticket?
> > Any ideas or suggestions?
> >
> > (These are produced automatically, which is why some parts look bit odd,
> but
> > it also means they are consistent in many ways.) Facts follow - I can
> > provide more if needed.
> >
> > Invocation:
> > /sage/sage-6.5.beta6/sage firstlook02-newton-cooling.sage svg
> >
> >
> > Error:
> > CRITICAL:root:unknown notebook: None
> > Error, notebook must be one of default, ipython, sagenb but got None
> >
>
> Does your code have absolutely nothing whatever to do with the Sage or
> IPython notebookes?
> This makes me wonder -- what happens if you rename
> "firstlook02-newton-cooling.sage" to
> "a.sage" and try again. I am suspicious that the "-n" inside the
> filename is causing a problem.
>
>
> >
> > firstlook02-newton-cooling.sage:
> > import sys
> > suffix = sys.argv[1]
> > f(x) = 28.6 * exp(-0.0725 * x) + 70
> > p = plot(f, (x, 0, 50), ymin = 55, ymax = 110, thickness=2,
> > aspect_ratio=0.4, axes_labels=['$t$','$T(t)$'], fontsize=18)
> > plot_idp37915040 = p
> > try:
> >
> plot_idp37915040.save("firstlook02-newton-cooling.{}".format(suffix))
> > except ValueError:
> > plot_idp37915040.save("firstlook02-newton-cooling.png")
> >
> >
> > Fails: 6.4 (Linux), 6.5.beta6 (Linux), 6.4.1 (Mac)
> > Succeeds: 6.0, 6.2, 6.3 (all Linux)
> >
> > Linux testing is on built-from-source (unsure about Mac binaries).
> >
> > The following very similar file succeeds with a similar invocation:
> >
> > firstlook01-exercise-slope-field-1.sage:
> > import sys
> > suffix = sys.argv[1]
> > t = var('t')
> > f(x) = 2*x*(1 - x)
> > v = plot_slope_field(f, (t,-2,2), (x,-2,2), headaxislength=3,
> headlength=3,
> > axes_labels=['$t$','$x$'], fontsize=18)
> > plot_idp38572272 = v
> > try:
> >
> >
> plot_idp38572272.save("firstlook01-exercise-slope-field-1.{}".format(suffix))
>
> > except ValueError:
> > plot_idp38572272.save("firstlook01-exercise-slope-field-1.png")
> >
> >
> > --
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>
>
> --
> William Stein
> Professor of Mathematics
> University of Washington
> http://wstein.org
>
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