AttributeError: 'ToolbarBox' object has no attribute 'children'

[matteobachetti]

If I try to run in a notebook the example here I get the AttributeError in the title. I paste below the full traceback.

I'm running holoviews installed through conda.

Thanks in advance for your help.

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
/home/mbachett/anaconda/envs/py36/lib/python3.6/site-packages/IPython/core/formatters.py in __call__(self, obj)
    303                 pass
    304             else:
--> 305                 return printer(obj)
    306             # Finally look for special method names
    307             method = get_real_method(obj, self.print_method)

/home/mbachett/anaconda/envs/py36/lib/python3.6/site-packages/holoviews/ipython/display_hooks.py in pprint_display(obj)
    257     if not ip.display_formatter.formatters['text/plain'].pprint:
    258         return None
--> 259     return display(obj, raw=True)
    260 
    261 

/home/mbachett/anaconda/envs/py36/lib/python3.6/site-packages/holoviews/ipython/display_hooks.py in display(obj, raw, **kwargs)
    234     if isinstance(obj, GridSpace):
    235         with option_state(obj):
--> 236             html = grid_display(obj)
    237     elif isinstance(obj, (CompositeOverlay, ViewableElement)):
    238         with option_state(obj):

/home/mbachett/anaconda/envs/py36/lib/python3.6/site-packages/holoviews/ipython/display_hooks.py in wrapped(element)
    130         try:
    131             html = fn(element,
--> 132                       max_frames=OutputSettings.options['max_frames'])
    133 
    134             # Only want to add to the archive for one display hook...

/home/mbachett/anaconda/envs/py36/lib/python3.6/site-packages/holoviews/ipython/display_hooks.py in grid_display(grid, max_frames)
    223         return None
    224 
--> 225     return render(grid)
    226 
    227 

/home/mbachett/anaconda/envs/py36/lib/python3.6/site-packages/holoviews/ipython/display_hooks.py in render(obj, **kwargs)
     60     if renderer.fig == 'pdf':
     61         renderer = renderer.instance(fig='png')
---> 62     return renderer.html(obj, **kwargs)
     63 
     64 

/home/mbachett/anaconda/envs/py36/lib/python3.6/site-packages/holoviews/plotting/renderer.py in html(self, obj, fmt, css, comm, **kwargs)
    255         code to initialize a Comm, if the plot supplies one.
    256         """
--> 257         plot, fmt =  self._validate(obj, fmt)
    258         figdata, _ = self(plot, fmt, **kwargs)
    259         if css is None: css = self.css

/home/mbachett/anaconda/envs/py36/lib/python3.6/site-packages/holoviews/plotting/renderer.py in _validate(self, obj, fmt)
    191         if isinstance(obj, tuple(self.widgets.values())):
    192             return obj, 'html'
--> 193         plot = self.get_plot(obj, renderer=self)
    194 
    195         fig_formats = self.mode_formats['fig'][self.mode]

/home/mbachett/anaconda/envs/py36/lib/python3.6/site-packages/holoviews/plotting/bokeh/renderer.py in get_plot(self_or_cls, obj, doc, renderer)
    114         combining the bokeh model with another plot.
    115         """
--> 116         plot = super(BokehRenderer, self_or_cls).get_plot(obj, renderer)
    117         if self_or_cls.mode == 'server' and doc is None:
    118             doc = curdoc()

/home/mbachett/anaconda/envs/py36/lib/python3.6/site-packages/holoviews/plotting/renderer.py in get_plot(self_or_cls, obj, renderer)
    178             plot = self_or_cls.plotting_class(obj)(obj, renderer=renderer,
    179                                                    **plot_opts)
--> 180             plot.update(0)
    181         else:
    182             plot = obj

/home/mbachett/anaconda/envs/py36/lib/python3.6/site-packages/holoviews/plotting/plot.py in update(self, key)
    483     def update(self, key):
    484         if len(self) == 1 and key == 0 and not self.drawn:
--> 485             return self.initialize_plot()
    486         item = self.__getitem__(key)
    487         self.traverse(lambda x: setattr(x, '_updated', True))

/home/mbachett/anaconda/envs/py36/lib/python3.6/site-packages/holoviews/plotting/bokeh/plot.py in initialize_plot(self, ranges, plots)
    422 
    423         plot = gridplot(plots[::-1])
--> 424         plot = self._make_axes(plot)
    425 
    426         title = self._get_title(self.keys[-1])

/home/mbachett/anaconda/envs/py36/lib/python3.6/site-packages/holoviews/plotting/bokeh/plot.py in _make_axes(self, plot)
    440 
    441     def _make_axes(self, plot):
--> 442         width, height = self.renderer.get_size(plot)
    443         x_axis, y_axis = None, None
    444         kwargs = dict(sizing_mode=self.sizing_mode)

/home/mbachett/anaconda/envs/py36/lib/python3.6/site-packages/holoviews/plotting/bokeh/renderer.py in get_size(self_or_cls, plot)
    283             raise ValueError('Can only compute sizes for HoloViews '
    284                              'and bokeh plot objects.')
--> 285         return compute_plot_size(plot)
    286 
    287 

/home/mbachett/anaconda/envs/py36/lib/python3.6/site-packages/holoviews/plotting/bokeh/util.py in compute_plot_size(plot)
    158         else:
    159             w_agg, h_agg = (np.max, np.sum)
--> 160         widths, heights = zip(*[compute_plot_size(child) for child in plot.children])
    161         width, height = w_agg(widths), h_agg(heights)
    162     elif isinstance(plot, (Figure, Chart)):

/home/mbachett/anaconda/envs/py36/lib/python3.6/site-packages/holoviews/plotting/bokeh/util.py in <listcomp>(.0)
    158         else:
    159             w_agg, h_agg = (np.max, np.sum)
--> 160         widths, heights = zip(*[compute_plot_size(child) for child in plot.children])
    161         width, height = w_agg(widths), h_agg(heights)
    162     elif isinstance(plot, (Figure, Chart)):

/home/mbachett/anaconda/envs/py36/lib/python3.6/site-packages/holoviews/plotting/bokeh/util.py in compute_plot_size(plot)
    151         return 0, 0
    152     elif isinstance(plot, (Row, Column, ToolbarBox, WidgetBox, Tabs)):
--> 153         if not plot.children: return 0, 0
    154         if isinstance(plot, Row) or (isinstance(plot, ToolbarBox) and plot.toolbar_location not in ['right', 'left']):
    155             w_agg, h_agg = (np.sum, np.max)

AttributeError: 'ToolbarBox' object has no attribute 'children'

Out[45]:
:GridMatrix   [X,Y]
   :NdOverlay   [species]
      :Scatter   [sepal_width]   (sepal_width)

[philippjfr]

Thanks for reporting this, it's caused by a change in bokeh 0.12.11 and has been fixed in master (see #2159). We'll try to release 1.9.2 soon, but for the time being I recommend downgrading to bokeh 0.12.10.

[matteobachetti]

Thanks! Indeed, it works with bokeh 0.12.10.

[philippjfr]

The plan is to release 1.9.2 later today, closing.