%matplotlibinlineimportmatplotlib.pyplotaspltimportpintunits=pint.UnitRegistry()fig,axes=plt.subplots(1,1)axes.axhline(0*units.meter)

---------------------------------------------------------------------------ValueError                                Traceback (most recent call last)<ipython-input-3-b77d6298b805> in <module>()6 units= pint.UnitRegistry()7 fig, axes= plt.subplots(1,1)----> 8 axes.axhline(0 * units.meter)~/miniconda3/envs/py36/lib/python3.6/site-packages/matplotlib/axes/_axes.py in axhline(self, y, xmin, xmax, **kwargs)720self._process_unit_info(ydata=y,kwargs=kwargs)721         yy=self.convert_yunits(y)--> 722         scaley = (yy < ymin) or (yy > ymax)723724         trans=self.get_yaxis_transform(which='grid')~/miniconda3/envs/py36/lib/python3.6/site-packages/pint/quantity.py in <lambda>(self, other)   1075                   other.to_root_units().magnitude)   1076 -> 1077     __lt__ = lambda self, other: self.compare(other, op=operator.lt)   1078     __le__ = lambda self, other: self.compare(other, op=operator.le)   1079     __ge__ = lambda self, other: self.compare(other, op=operator.ge)~/miniconda3/envs/py36/lib/python3.6/site-packages/pint/quantity.py in compare(self, other, op)   1065                 return op(self._convert_magnitude_not_inplace(UnitsContainer()), other)   1066             else:-> 1067                 raise ValueError('Cannot compare Quantity and {0}'.format(type(other)))   1068    1069         if self._units == other._units:ValueError:Cannot compare Quantity and <class 'numpy.float64'>