[IPython-dev] clear_output() of only last line?

Fernando Perez fperez.net@gmail....
Sun Apr 22 23:06:20 CDT 2012


Hi Mike,

On Wed, Apr 11, 2012 at 9:43 AM, Michael Droettboom <mdroe@stsci.edu> wrote:
> I'm working on getting our animated progressbars in astropy to work in the
> IPython notebook.  I found the recipe of using "clear_output()" in this bug
> report:
>
> https://github.com/ipython/ipython/issues/1527
>
> That gets things closer, but unlike "\r" at a standard terminal,
> clear_output() clears the entire output chunk, not just the last line.  So
> if we have multiple progress bars, or progress bars interspersed with
> logging messages, all but the last progress bar gets deleted.
>
> For example:
>
> from IPython.core.display import clear_output
>
> print "Working"
> for i in range(80):
>     clear_output()
>     print "\r" + ("=" * i)
>
> Any suggestions?

Have you had a chance to look at the new Animations_and_Progress
notebook in master?  It shows examples of how to make both text-based
and graphical progressbars in the nb.

I hope that helps, and sorry for the delayed reply!

Best,

f


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