#12719: Upgrade to IPython 0.13
----------------------------------------------------------+-----------------
Reporter: kini | Owner: tbd
Type: enhancement | Status:
needs_work
Priority: critical | Milestone:
sage-5.1
Component: packages | Resolution:
Keywords: sd40.5 | Work issues: ??
doesn't show code
Report Upstream: N/A | Reviewers:
Volker Braun, Mike Hansen, Jason Grout
Authors: Mike Hansen, Volker Braun, Jason Grout | Merged in:
Dependencies: | Stopgaps:
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Comment (by jason):
Replying to [comment:76 jason]:
> Fernando: I looked in the IPython source, and it seems that IPython is
a little more subtle than mentioned above. By default, it only executes
the last block as interactive (compile in 'single' mode) ''if it is an
expression''. In Sage, we (by default) execute the last block always in
'single' mode. I think that is the difference here.
>
> Given that (and if I understood correctly), could you explain again your
reasoning for choosing to not compile in 'single' mode if it isn't an
expression?
And here is Fernando's response:
Precisely so that if the last block has a loop, it doesn't produce
multiple `Out [NN]` cells. We want to keep a one-to-one mapping between a
cell and its output. For example it's quite common to write code like:
{{{
for i in x:
plot(x[i], label='blah_i')
}}}
If we compile that as 'single', we'd get all the Matplotlib line
collection results piling up at the bottom, one for each plot call.
We played a *lot* with various options, and settled on this behavior after
much experimentation. After 2 years of using it, I remain convinced it's
the right solution *for us*. Not to say that Sage can't make a different
choice that works better for you guys, of course!
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12719#comment:78>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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