importmatplotlib.pyplotaspltimportmatplotlibasmplimportnumpyasnp%matplotlibinlinex=range(2)heights=np.asarray([np.nan,4])plt.bar(x,heights)

<BarContainer object of 2 artists>---------------------------------------------------------------------------ValueError                                Traceback (most recent call last)~/.local/lib/python3.8/site-packages/IPython/core/formatters.py in __call__(self, obj)    339                 pass    340             else:--> 341                 return printer(obj)    342             # Finally look for special method names    343             method = get_real_method(obj, self.print_method)~/.local/lib/python3.8/site-packages/IPython/core/pylabtools.py in <lambda>(fig)    246     247     if 'png' in formats:--> 248         png_formatter.for_type(Figure, lambda fig: print_figure(fig, 'png', **kwargs))    249     if 'retina' in formats or 'png2x' in formats:    250         png_formatter.for_type(Figure, lambda fig: retina_figure(fig, **kwargs))~/.local/lib/python3.8/site-packages/IPython/core/pylabtools.py in print_figure(fig, fmt, bbox_inches, **kwargs)    130         FigureCanvasBase(fig)    131 --> 132     fig.canvas.print_figure(bytes_io, **kw)    133     data = bytes_io.getvalue()    134     if fmt == 'svg':~/miniconda/envs/seaborn_devenv/lib/python3.8/site-packages/matplotlib/backend_bases.py in print_figure(self, filename, dpi, facecolor, edgecolor, orientation, format, bbox_inches, pad_inches, bbox_extra_artists, backend, **kwargs)   2186                         self.figure.draw(renderer)   2187 -> 2188                     bbox_inches = self.figure.get_tightbbox(   2189                         renderer, bbox_extra_artists=bbox_extra_artists)   2190                     if pad_inches is None:~/miniconda/envs/seaborn_devenv/lib/python3.8/site-packages/matplotlib/figure.py in get_tightbbox(self, renderer, bbox_extra_artists)   2500    2501         for a in artists:-> 2502             bbox = a.get_tightbbox(renderer)   2503             if bbox is not None and (bbox.width != 0 or bbox.height != 0):   2504                 bb.append(bbox)~/miniconda/envs/seaborn_devenv/lib/python3.8/site-packages/matplotlib/artist.py in get_tightbbox(self, renderer)    276             The enclosing bounding box (in figure pixel coordinates).    277         """--> 278         bbox = self.get_window_extent(renderer)    279         if self.get_clip_on():    280             clip_box = self.get_clip_box()~/miniconda/envs/seaborn_devenv/lib/python3.8/site-packages/matplotlib/patches.py in get_window_extent(self, renderer)    596     597     def get_window_extent(self, renderer=None):--> 598         return self.get_path().get_extents(self.get_transform())    599     600     def _convert_xy_units(self, xy):~/miniconda/envs/seaborn_devenv/lib/python3.8/site-packages/matplotlib/path.py in get_extents(self, transform, **kwargs)    590             self = transform.transform_path(self)    591         bbox = Bbox.null()--> 592         for curve, code in self.iter_bezier(**kwargs):    593             # places where the derivative is zero can be extrema    594             _, dzeros = curve.axis_aligned_extrema()~/miniconda/envs/seaborn_devenv/lib/python3.8/site-packages/matplotlib/path.py in iter_bezier(self, **kwargs)    442             if first_vert is None:    443                 if code != Path.MOVETO:--> 444                     raise ValueError("Malformed path, must start with MOVETO.")    445             if code == Path.MOVETO:  # a point is like "CURVE1"    446                 first_vert = vertsValueError: Malformed path, must start with MOVETO.<Figure size 432x288 with 1 Axes>