Re: [matplotlib-devel] Cairo backend prospects

[Fernando P. <fpe...@gm...>]

On 1/10/07, Steve Chaplin <ste...@ya...> wrote:
> On Mon, 2007-01-08 at 11:24 -0500, Darren Dale wrote:

> > I had to alter the following lines from backend_gtkcairo, from
> >
> > import matplotlib.backends.backend_cairo as be_cairo
> > from   matplotlib.backends.backend_gtk import *
> >
> > to
> >
> > import backend_cairo as be_cairo
> > from   backend_gtk import *
> >
> > in order to prevent the following traceback:
> >
> > Traceback (most recent call last):
> >   File "/usr/bin/ipython", line 27, in ?
> >     IPython.Shell.start().mainloop()
> >   File "/usr/lib64/python2.4/site-packages/IPython/Shell.py", line 1034, in
> > start
> >     return shell(user_ns = user_ns)
> >   File "/usr/lib64/python2.4/site-packages/IPython/Shell.py", line 945, in
> > __init__
> >     shell_class=MatplotlibMTShell)
> >   File "/usr/lib64/python2.4/site-packages/IPython/Shell.py", line 622, in
> > __init__
> >     on_kill=[mainquit])
> >   File "/usr/lib64/python2.4/site-packages/IPython/ipmaker.py", line 90, in
> > make_IPython
> >     embedded=embedded,**kw)
> >   File "/usr/lib64/python2.4/site-packages/IPython/Shell.py", line 506, in
> > __init__
> >     user_ns,b2 = self._matplotlib_config(name,user_ns)
> >   File "/usr/lib64/python2.4/site-packages/IPython/Shell.py", line 397, in
> > _matplotlib_config
> >     from matplotlib import backends
> >   File "/usr/lib64/python2.4/site-packages/matplotlib/backends/__init__.py",
> > line 55, in ?
> >     new_figure_manager, draw_if_interactive, show = pylab_setup()
> >   File "/usr/lib64/python2.4/site-packages/matplotlib/backends/__init__.py",
> > line 23, in pylab_setup
> >     globals(),locals(),[backend_name])
> >
> > File "/usr/lib64/python2.4/site-packages/matplotlib/backends/backend_gtkcairo.py",
> > line 11, in ?
> >     import matplotlib.backends.backend_cairo as be_cairo
> > AttributeError: 'module' object has no attribute 'backends'
>
> The original matplotlib code is correct, you should be editing IPython
> and correcting their bug!

Well, I'd be delighted to correct the ipython bug, if only I
understood exactly what the problem was...  As far as I can see, that
code in ipython is simply calling

        # Initialize matplotlib to interactive mode always
        import matplotlib
        from matplotlib import backends

inside a function (the _matplotlib_config method).  I don't see a bug
in that, but if you provide some pointers, I'll be happy to fix any
issues that are on ipython's side of the fence.

Cheers,

f