Re: [Matplotlib-users] Question to OO matplotlub tutorial

[Florian L. <mai...@xg...>]

Am Samstag, 14. Mai 2005 23:05 schrieb John Hunter:
> >>>>> "Florian" == Florian Lindner <mai...@xg...> writes:
>
>     Florian> Am Freitag, 13. Mai 2005 18:49 schrieb John Hunter:
>     >> >>>>> "Florian" == Florian Lindner <mai...@xg...>
>     >>
>     >> writes:
>
>     Florian> No.  I pasted the complete script into the mail. There is
>     Florian> nothing else I execute...
>
>     >>  Please post the following commands, or their equivalent for
>     >> your platform, and their output.  Please include the commands
>     >> you actually type in your post.
>     >>
>     >> > cat test.py > /usr/bin/python2.4 ./test.py --verbose-helpful
>
>     Florian> Here we go:
>
> Well, I'll be damned.  I really can't believe this hasn't cropped up
> before -- it's a real bug.
>
> The errant code is in matplotlib/backends/__init___.py
>
> # Import the requested backend into a generic module object
> backend_name = 'backend_'+backend.lower()
> backend_mod = __import__('matplotlib.backends.'+backend_name,
>                          globals(),locals(),[backend_name])
>
> Where the default backend is being imported.  These changes were
> introduced many moons ago by Fernando when he was cleaning up the
> backend import for ipython/pylab.  Then need top be moved to a
> function or otherwise deferred until pylab asks for them, to prevent
> the kind of problem you are seeing.
>
> As a workaround, add these two lines at the top of your script:
>
> import matplotlib
> matplotlib.use('Agg')
>
> or change the default backend in the rc file to 'Agg'. Even though
> there are 2 good workarounds, I still consider this to be a little bug,
> because the OO interface shouldn't be doing any magic like importing a
> backend implicitly.  Would you be willing to file a bug report on the
> sourceforge site?

Could you file the backreport? I'm not very involved in the matplotlib 
development and therefore I'm sure your report could be much more precise.

Regards,

Florian