importmatplotlib.pyplotaspltimportmatplotlib.font_managerasfmfromcyclerimportcyclerfrommatplotlibimportrcplt.rcParams['font.size']=11plt.rcParams['figure.autolayout']=Trueplt.rcParams['savefig.dpi']=300plt.rcParams['xtick.labelsize']='medium'plt.rcParams['ytick.labelsize']='medium'plt.rcParams['xtick.major.size']=8plt.rcParams['ytick.major.size']=8plt.rcParams['xtick.minor.size']=3plt.rcParams['ytick.minor.size']=3plt.rcParams['xtick.major.width']=1plt.rcParams['ytick.major.width']=1plt.rcParams['xtick.minor.width']=1plt.rcParams['ytick.minor.width']=1plt.rcParams['xtick.top']=Trueplt.rcParams['ytick.right']=Trueplt.rcParams['xtick.minor.visible']=Trueplt.rcParams['ytick.minor.visible']=Trueplt.rcParams['xtick.direction']='in'plt.rcParams['ytick.direction']='in'plt.rcParams['lines.markersize']=4plt.rcParams['lines.linewidth']=1plt.rcParams['lines.markeredgewidth']=0.2plt.rcParams['path.simplify']=Trueplt.rcParams['text.usetex']=Truerc('text.latex',preamble=r'\usepackage[T1]{fontenc}\usepackage{cmbright}')plt.rcParams['axes.linewidth']=0.7plt.rcParams['axes.labelsize']='large'plt.rcParams['axes.prop_cycle']=cycler(color=['k','r','g','b','c','m','y'])plt.rcParams['legend.numpoints']=1plt.rcParams['legend.frameon']=Falseplt.rcParams['legend.handletextpad']=0.3plt.rcParams['legend.scatterpoints']=1plt.rcParams['legend.handlelength']=2plt.rcParams['legend.handleheight']=0.1plt.plot([10,100], [10,100])plt.savefig('test.pdf')

---------------------------------------------------------------------------FileNotFoundError                         Traceback (most recent call last)<ipython-input-6-368972b0f1c2> in <module>      1 plt.plot([10,100], [10,100])----> 2 plt.savefig('test.pdf')~/.local/lib/python3.7/site-packages/matplotlib/pyplot.py in savefig(*args, **kwargs)    964 def savefig(*args, **kwargs):    965     fig = gcf()--> 966     res = fig.savefig(*args, **kwargs)    967     fig.canvas.draw_idle()   # need this if 'transparent=True' to reset colors    968     return res~/.local/lib/python3.7/site-packages/matplotlib/figure.py in savefig(self, fname, transparent, **kwargs)   3013                 patch.set_edgecolor('none')   3014 -> 3015         self.canvas.print_figure(fname, **kwargs)   3016    3017         if transparent:~/.local/lib/python3.7/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)   2259                         orientation=orientation,   2260                         bbox_inches_restore=_bbox_inches_restore,-> 2261                         **kwargs)   2262             finally:   2263                 if bbox_inches and restore_bbox:~/.local/lib/python3.7/site-packages/matplotlib/backend_bases.py in wrapper(*args, **kwargs)   1667             kwargs.pop(arg)   1668 -> 1669         return func(*args, **kwargs)   1670    1671     return wrapper~/.local/lib/python3.7/site-packages/matplotlib/_api/deprecation.py in wrapper(*inner_args, **inner_kwargs)    429                          else deprecation_addendum,    430                 **kwargs)--> 431         return func(*inner_args, **inner_kwargs)    432     433     return wrapper~/.local/lib/python3.7/site-packages/matplotlib/backends/backend_pdf.py in print_pdf(self, filename, dpi, bbox_inches_restore, metadata)   2723                 RendererPdf(file, dpi, height, width),   2724                 bbox_inches_restore=bbox_inches_restore)-> 2725             self.figure.draw(renderer)   2726             renderer.finalize()   2727             if not isinstance(filename, PdfPages):~/.local/lib/python3.7/site-packages/matplotlib/artist.py in draw_wrapper(artist, renderer, *args, **kwargs)     72     @wraps(draw)     73     def draw_wrapper(artist, renderer, *args, **kwargs):---> 74         result = draw(artist, renderer, *args, **kwargs)     75         if renderer._rasterizing:     76             renderer.stop_rasterizing()~/.local/lib/python3.7/site-packages/matplotlib/artist.py in draw_wrapper(artist, renderer, *args, **kwargs)     49                 renderer.start_filter()     50 ---> 51             return draw(artist, renderer, *args, **kwargs)     52         finally:     53             if artist.get_agg_filter() is not None:~/.local/lib/python3.7/site-packages/matplotlib/figure.py in draw(self, renderer)   2789             self.patch.draw(renderer)   2790             mimage._draw_list_compositing_images(-> 2791                 renderer, self, artists, self.suppressComposite)   2792    2793             for sfig in self.subfigs:~/.local/lib/python3.7/site-packages/matplotlib/image.py in _draw_list_compositing_images(renderer, parent, artists, suppress_composite)    130     if not_composite or not has_images:    131         for a in artists:--> 132             a.draw(renderer)    133     else:    134         # Composite any adjacent images together~/.local/lib/python3.7/site-packages/matplotlib/artist.py in draw_wrapper(artist, renderer, *args, **kwargs)     49                 renderer.start_filter()     50 ---> 51             return draw(artist, renderer, *args, **kwargs)     52         finally:     53             if artist.get_agg_filter() is not None:~/.local/lib/python3.7/site-packages/matplotlib/_api/deprecation.py in wrapper(*inner_args, **inner_kwargs)    429                          else deprecation_addendum,    430                 **kwargs)--> 431         return func(*inner_args, **inner_kwargs)    432     433     return wrapper~/.local/lib/python3.7/site-packages/matplotlib/axes/_base.py in draw(self, renderer, inframe)   2919             renderer.stop_rasterizing()   2920 -> 2921         mimage._draw_list_compositing_images(renderer, self, artists)   2922    2923         renderer.close_group('axes')~/.local/lib/python3.7/site-packages/matplotlib/image.py in _draw_list_compositing_images(renderer, parent, artists, suppress_composite)    130     if not_composite or not has_images:    131         for a in artists:--> 132             a.draw(renderer)    133     else:    134         # Composite any adjacent images together~/.local/lib/python3.7/site-packages/matplotlib/artist.py in draw_wrapper(artist, renderer, *args, **kwargs)     49                 renderer.start_filter()     50 ---> 51             return draw(artist, renderer, *args, **kwargs)     52         finally:     53             if artist.get_agg_filter() is not None:~/.local/lib/python3.7/site-packages/matplotlib/axis.py in draw(self, renderer, *args, **kwargs)   1144    1145         for tick in ticks_to_draw:-> 1146             tick.draw(renderer)   1147    1148         # scale up the axis label box to also find the neighbors, not~/.local/lib/python3.7/site-packages/matplotlib/artist.py in draw_wrapper(artist, renderer, *args, **kwargs)     49                 renderer.start_filter()     50 ---> 51             return draw(artist, renderer, *args, **kwargs)     52         finally:     53             if artist.get_agg_filter() is not None:~/.local/lib/python3.7/site-packages/matplotlib/axis.py in draw(self, renderer)    300         for artist in [self.gridline, self.tick1line, self.tick2line,    301                        self.label1, self.label2]:--> 302             artist.draw(renderer)    303         renderer.close_group(self.__name__)    304         self.stale = False~/.local/lib/python3.7/site-packages/matplotlib/artist.py in draw_wrapper(artist, renderer, *args, **kwargs)     49                 renderer.start_filter()     50 ---> 51             return draw(artist, renderer, *args, **kwargs)     52         finally:     53             if artist.get_agg_filter() is not None:~/.local/lib/python3.7/site-packages/matplotlib/text.py in draw(self, renderer)    723                     textrenderer.draw_tex(gc, x, y, clean_line,    724                                           textobj._fontproperties, angle,--> 725                                           mtext=mtext)    726                 else:    727                     textrenderer.draw_text(gc, x, y, clean_line,~/.local/lib/python3.7/site-packages/matplotlib/_api/deprecation.py in wrapper(*inner_args, **inner_kwargs)    429                          else deprecation_addendum,    430                 **kwargs)--> 431         return func(*inner_args, **inner_kwargs)    432     433     return wrapper~/.local/lib/python3.7/site-packages/matplotlib/backends/backend_pdf.py in draw_tex(self, gc, x, y, s, prop, angle, ismath, mtext)   2190         for x1, y1, dvifont, glyph, width in page.text:   2191             if dvifont != oldfont:-> 2192                 pdfname = self.file.dviFontName(dvifont)   2193                 seq += [['font', pdfname, dvifont.size]]   2194                 oldfont = dvifont~/.local/lib/python3.7/site-packages/matplotlib/backends/backend_pdf.py in dviFontName(self, dvifont)    862             return dvi_info.pdfname    863 --> 864         tex_font_map = dviread.PsfontsMap(dviread.find_tex_file('pdftex.map'))    865         psfont = tex_font_map[dvifont.texname]    866         if psfont.filename is None:~/.local/lib/python3.7/site-packages/matplotlib/dviread.py in __new__(cls, filename)    849         self._font = {}    850         self._filename = os.fsdecode(filename)--> 851         with open(filename, 'rb') as file:    852             self._parse(file)    853         return selfFileNotFoundError: [Errno 2] No such file or directory: ''