[SciPy-dev] adding a nice progressbar to scipy
Fri Jan 11 20:54:19 CST 2008
On Jan 12, 2008 3:26 AM, Fernando Perez <email@example.com> wrote:
> On Jan 11, 2008 6:52 PM, Ondrej Certik <firstname.lastname@example.org> wrote:
> > So what is the conclusion?
> > Maybe I should stress, that the progress bar is just one file with 300
> > lines of code.
> > So it's not really a package, just a feature. I was thinking of
> > scipy.io, but ipython
> > is maybe better. If it can contain interaction with gnuplot, why not a simple
> > progressbar? :)
> A few questions:
> - Will it run *correctly* under Windows? I don't use it, but I don't
> want the text-only core of ipython to start sprouting functionality
> that breaks under windows (or any OS for that matter). Same thing for
> Linux/OSX. I know it says 'os independent', but I want independent
> confirmation of that statement.
Right, I don't know, since I don't use windows and I cannot test it.
> - It makes calls to ioctl() without checks that the import at the top
> actually worked. That will break somewhere, I guarantee it.
It's used in handle_resize only, which is only used in
self.signal_set = True
self.term_width = 79
I am not saying it's the best programming practice, but I think
it will work without ioctl quite well.
> - Is signal.SIGWINCH available on all OSes?
I don't know.
> - termios is also used without checks. That will likely throw an
> exception under windows.
Again only in handle_resize(), which is only called in the code above,
so it should be safe.
> - Etc. This code doesn't look like it's ever been properly tested for
> cross-platform compatibility. Welcome to the real world.
Right. I can only say that it works well in Debian.
> If all of the above were to be addressed, it's small enough that I'm
> willing to throw it into ipython.externals for convenience. 300 lines
> is a drop in the bucket at this point, and for interactive work it can
> come in very handy, I agree. No sysadmin will notice it's hiding in
> there :)
> In this case, a few things:
> - You said that the author would BSD license it, but the current code
> http://pypi.python.org/pypi/progressbar still shows LGPL-only. I
> won't put it in until we get from him a BSD-licensed file.
Yes, he only sent an email to me, I can ask him to send an email to
this list too.
> - Please send us the patch you suggested writing for the more comon case.
I'll send it to the ipython list.
> - You commit to letting us know when an update is warranted and
> sending us the corresponding patch, so that the ipython developers can
> apply it with minimal effort.
I commit. The final decision needs to be made by ipython developers though,
if they are willing to maintain such a code if I won't be available
(for any reason). But except
the points you raised, I think it's very readable, so there shouldn't
be a problem with that.
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