frommatplotlibimportfigurefrommatplotlib.backends.backend_aggimportFigureCanvasAggimportpandasaspdif__name__=='__main__':fig=figure.Figure()ax=fig.add_subplot(1,1,1)data=pd.Series(data=[0,1],index=['xdata','ydata'])print(data['xdata'])print(data['ydata'])ax.plot('xdata','ydata',data=data,marker='o')canvas=FigureCanvasAgg(fig)canvas.print_figure('test.png')

01Traceback (most recent call last):  File "test1.py", line 12, in <module>    ax.plot('xdata', 'ydata', data=data, marker='o')  File "/home/stilley2/anaconda3/envs/testmpl/lib/python3.7/site-packages/matplotlib/__init__.py", line 1805, in inner    return func(ax, *args, **kwargs)  File "/home/stilley2/anaconda3/envs/testmpl/lib/python3.7/site-packages/matplotlib/axes/_axes.py", line 1603, in plot    for line in self._get_lines(*args, **kwargs):  File "/home/stilley2/anaconda3/envs/testmpl/lib/python3.7/site-packages/matplotlib/axes/_base.py", line 393, in _grab_next_args    yield from self._plot_args(this, kwargs)  File "/home/stilley2/anaconda3/envs/testmpl/lib/python3.7/site-packages/matplotlib/axes/_base.py", line 342, in _plot_args    linestyle, marker, color = _process_plot_format(tup[-1])  File "/home/stilley2/anaconda3/envs/testmpl/lib/python3.7/site-packages/matplotlib/axes/_base.py", line 118, in _process_plot_format    'Unrecognized character %c in format string' % c)ValueError: Unrecognized character a in format string