我有一个jupyter笔记本脚本，一部分看起来像这样：
import pandas as pd
import matplotlib
import matplotlib.pyplot as plt
import numpy as np
%matplotlib inline
matplotlib.style.use('ggplot')
matplotlib.rc('text', usetex=True)
import scipy.stats
df = pd.read_csv("./titanic-train.csv")
ax = df.Age.hist(bins=20)
ax.set_xlabel("age / years")
ax.set_ylabel("frequency");
之后，我得到一个错误，它将不会打印直方图。 我正在使用随Anaconda安装的Python 3.7.3。 在Windows 10的cmd窗口中打印乳胶，我得到：
这是pdfTeX版本3.14159265-2.6-1.40.20（MiKTeX 2.9.7250 64位）
这是我通过运行dataframe.hist（）得到的错误消息：
Error in callback <function install_repl_displayhook.<locals>.post_execute at 0x0000029D82BD2950> (for post_execute):
---------------------------------------------------------------------------
FileNotFoundError Traceback (most recent call last)
~\Anaconda3\lib\site-packages\matplotlib\texmanager.py in _run_checked_subprocess(self, command, tex)
303 cwd=self.texcache,
--> 304 stderr=subprocess.STDOUT)
305 except FileNotFoundError as exc:
~\Anaconda3\lib\subprocess.py in check_output(timeout, *popenargs, **kwargs)
394 return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
--> 395 **kwargs).stdout
396
~\Anaconda3\lib\subprocess.py in run(input, capture_output, timeout, check, *popenargs, **kwargs)
471
--> 472 with Popen(*popenargs, **kwargs) as process:
473 try:
~\Anaconda3\lib\subprocess.py in __init__(self, args, bufsize, executable, stdin, stdout, stderr, preexec_fn, close_fds, shell, cwd, env, universal_newlines, startupinfo, creationflags, restore_signals, start_new_session, pass_fds, encoding, errors, text)
774 errread, errwrite,
--> 775 restore_signals, start_new_session)
776 except:
~\Anaconda3\lib\subprocess.py in _execute_child(self, args, executable, preexec_fn, close_fds, pass_fds, cwd, env, startupinfo, creationflags, shell, p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite, unused_restore_signals, unused_start_new_session)
1177 os.fspath(cwd) if cwd is not None else None,
-> 1178 startupinfo)
1179 finally:
FileNotFoundError: [WinError 2] The system cannot find the file specified
The above exception was the direct cause of the following exception:
RuntimeError Traceback (most recent call last)
~\Anaconda3\lib\site-packages\matplotlib\pyplot.py in post_execute()
107 def post_execute():
108 if matplotlib.is_interactive():
--> 109 draw_all()
110
111 # IPython >= 2
~\Anaconda3\lib\site-packages\matplotlib\_pylab_helpers.py in draw_all(cls, force)
126 for f_mgr in cls.get_all_fig_managers():
127 if force or f_mgr.canvas.figure.stale:
--> 128 f_mgr.canvas.draw_idle()
129
130 atexit.register(Gcf.destroy_all)
~\Anaconda3\lib\site-packages\matplotlib\backend_bases.py in draw_idle(self, *args, **kwargs)
1905 if not self._is_idle_drawing:
1906 with self._idle_draw_cntx():
-> 1907 self.draw(*args, **kwargs)
1908
1909 def draw_cursor(self, event):
~\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py in draw(self)
386 self.renderer = self.get_renderer(cleared=True)
387 with RendererAgg.lock:
--> 388 self.figure.draw(self.renderer)
389 # A GUI class may be need to update a window using this draw, so
390 # don't forget to call the superclass.
~\Anaconda3\lib\site-packages\matplotlib\artist.py in draw_wrapper(artist, renderer, *args, **kwargs)
36 renderer.start_filter()
37
---> 38 return draw(artist, renderer, *args, **kwargs)
39 finally:
40 if artist.get_agg_filter() is not None:
~\Anaconda3\lib\site-packages\matplotlib\figure.py in draw(self, renderer)
1707 self.patch.draw(renderer)
1708 mimage._draw_list_compositing_images(
-> 1709 renderer, self, artists, self.suppressComposite)
1710
1711 renderer.close_group('figure')
~\Anaconda3\lib\site-packages\matplotlib\image.py in _draw_list_compositing_images(renderer, parent, artists, suppress_composite)
133 if not_composite or not has_images:
134 for a in artists:
--> 135 a.draw(renderer)
136 else:
137 # Composite any adjacent images together
~\Anaconda3\lib\site-packages\matplotlib\artist.py in draw_wrapper(artist, renderer, *args, **kwargs)
36 renderer.start_filter()
37
---> 38 return draw(artist, renderer, *args, **kwargs)
39 finally:
40 if artist.get_agg_filter() is not None:
~\Anaconda3\lib\site-packages\matplotlib\axes\_base.py in draw(self, renderer, inframe)
2643 renderer.stop_rasterizing()
2644
-> 2645 mimage._draw_list_compositing_images(renderer, self, artists)
2646
2647 renderer.close_group('axes')
~\Anaconda3\lib\site-packages\matplotlib\image.py in _draw_list_compositing_images(renderer, parent, artists, suppress_composite)
133 if not_composite or not has_images:
134 for a in artists:
--> 135 a.draw(renderer)
136 else:
137 # Composite any adjacent images together
~\Anaconda3\lib\site-packages\matplotlib\artist.py in draw_wrapper(artist, renderer, *args, **kwargs)
36 renderer.start_filter()
37
---> 38 return draw(artist, renderer, *args, **kwargs)
39 finally:
40 if artist.get_agg_filter() is not None:
~\Anaconda3\lib\site-packages\matplotlib\axis.py in draw(self, renderer, *args, **kwargs)
1204 ticks_to_draw = self._update_ticks()
1205 ticklabelBoxes, ticklabelBoxes2 = self._get_tick_bboxes(ticks_to_draw,
-> 1206 renderer)
1207
1208 for tick in ticks_to_draw:
~\Anaconda3\lib\site-packages\matplotlib\axis.py in _get_tick_bboxes(self, ticks, renderer)
1149 """Return lists of bboxes for ticks' label1's and label2's."""
1150 return ([tick.label1.get_window_extent(renderer)
-> 1151 for tick in ticks if tick.label1.get_visible()],
1152 [tick.label2.get_window_extent(renderer)
1153 for tick in ticks if tick.label2.get_visible()])
~\Anaconda3\lib\site-packages\matplotlib\axis.py in <listcomp>(.0)
1149 """Return lists of bboxes for ticks' label1's and label2's."""
1150 return ([tick.label1.get_window_extent(renderer)
-> 1151 for tick in ticks if tick.label1.get_visible()],
1152 [tick.label2.get_window_extent(renderer)
1153 for tick in ticks if tick.label2.get_visible()])
~\Anaconda3\lib\site-packages\matplotlib\text.py in get_window_extent(self, renderer, dpi)
888 raise RuntimeError('Cannot get window extent w/o renderer')
889
--> 890 bbox, info, descent = self._get_layout(self._renderer)
891 x, y = self.get_unitless_position()
892 x, y = self.get_transform().transform_point((x, y))
~\Anaconda3\lib\site-packages\matplotlib\text.py in _get_layout(self, renderer)
289 _, lp_h, lp_d = renderer.get_text_width_height_descent(
290 "lp", self._fontproperties,
--> 291 ismath="TeX" if self.get_usetex() else False)
292 min_dy = (lp_h - lp_d) * self._linespacing
293
~\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py in get_text_width_height_descent(self, s, prop, ismath)
199 fontsize = prop.get_size_in_points()
200 w, h, d = texmanager.get_text_width_height_descent(
--> 201 s, fontsize, renderer=self)
202 return w, h, d
203
~\Anaconda3\lib\site-packages\matplotlib\texmanager.py in get_text_width_height_descent(self, tex, fontsize, renderer)
446 else:
447 # use dviread. It sometimes returns a wrong descent.
--> 448 dvifile = self.make_dvi(tex, fontsize)
449 with dviread.Dvi(dvifile, 72 * dpi_fraction) as dvi:
450 page, = dvi
~\Anaconda3\lib\site-packages\matplotlib\texmanager.py in make_dvi(self, tex, fontsize)
336 self._run_checked_subprocess(
337 ["latex", "-interaction=nonstopmode", "--halt-on-error",
--> 338 texfile], tex)
339 for fname in glob.glob(basefile + '*'):
340 if not fname.endswith(('dvi', 'tex')):
~\Anaconda3\lib\site-packages\matplotlib\texmanager.py in _run_checked_subprocess(self, command, tex)
306 raise RuntimeError(
307 'Failed to process string with tex because {} could not be '
--> 308 'found'.format(command[0])) from exc
309 except subprocess.CalledProcessError as exc:
310 raise RuntimeError(
RuntimeError: Failed to process string with tex because latex could not be found
---------------------------------------------------------------------------
FileNotFoundError Traceback (most recent call last)
~\Anaconda3\lib\site-packages\matplotlib\texmanager.py in _run_checked_subprocess(self, command, tex)
303 cwd=self.texcache,
--> 304 stderr=subprocess.STDOUT)
305 except FileNotFoundError as exc:
~\Anaconda3\lib\subprocess.py in check_output(timeout, *popenargs, **kwargs)
394 return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
--> 395 **kwargs).stdout
396
~\Anaconda3\lib\subprocess.py in run(input, capture_output, timeout, check, *popenargs, **kwargs)
471
--> 472 with Popen(*popenargs, **kwargs) as process:
473 try:
~\Anaconda3\lib\subprocess.py in __init__(self, args, bufsize, executable, stdin, stdout, stderr, preexec_fn, close_fds, shell, cwd, env, universal_newlines, startupinfo, creationflags, restore_signals, start_new_session, pass_fds, encoding, errors, text)
774 errread, errwrite,
--> 775 restore_signals, start_new_session)
776 except:
~\Anaconda3\lib\subprocess.py in _execute_child(self, args, executable, preexec_fn, close_fds, pass_fds, cwd, env, startupinfo, creationflags, shell, p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite, unused_restore_signals, unused_start_new_session)
1177 os.fspath(cwd) if cwd is not None else None,
-> 1178 startupinfo)
1179 finally:
FileNotFoundError: [WinError 2] The system cannot find the file specified
The above exception was the direct cause of the following exception:
RuntimeError Traceback (most recent call last)
~\Anaconda3\lib\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)
~\Anaconda3\lib\site-packages\IPython\core\pylabtools.py in <lambda>(fig)
242
243 if 'png' in formats:
--> 244 png_formatter.for_type(Figure, lambda fig: print_figure(fig, 'png', **kwargs))
245 if 'retina' in formats or 'png2x' in formats:
246 png_formatter.for_type(Figure, lambda fig: retina_figure(fig, **kwargs))
~\Anaconda3\lib\site-packages\IPython\core\pylabtools.py in print_figure(fig, fmt, bbox_inches, **kwargs)
126
127 bytes_io = BytesIO()
--> 128 fig.canvas.print_figure(bytes_io, **kw)
129 data = bytes_io.getvalue()
130 if fmt == 'svg':
~\Anaconda3\lib\site-packages\matplotlib\backend_bases.py in print_figure(self, filename, dpi, facecolor, edgecolor, orientation, format, bbox_inches, **kwargs)
2054 orientation=orientation,
2055 dryrun=True,
-> 2056 **kwargs)
2057 renderer = self.figure._cachedRenderer
2058 bbox_artists = kwargs.pop("bbox_extra_artists", None)
~\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py in print_png(self, filename_or_obj, metadata, pil_kwargs, *args, **kwargs)
525
526 else:
--> 527 FigureCanvasAgg.draw(self)
528 renderer = self.get_renderer()
529 with cbook._setattr_cm(renderer, dpi=self.figure.dpi), \
~\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py in draw(self)
386 self.renderer = self.get_renderer(cleared=True)
387 with RendererAgg.lock:
--> 388 self.figure.draw(self.renderer)
389 # A GUI class may be need to update a window using this draw, so
390 # don't forget to call the superclass.
~\Anaconda3\lib\site-packages\matplotlib\artist.py in draw_wrapper(artist, renderer, *args, **kwargs)
36 renderer.start_filter()
37
---> 38 return draw(artist, renderer, *args, **kwargs)
39 finally:
40 if artist.get_agg_filter() is not None:
~\Anaconda3\lib\site-packages\matplotlib\figure.py in draw(self, renderer)
1707 self.patch.draw(renderer)
1708 mimage._draw_list_compositing_images(
-> 1709 renderer, self, artists, self.suppressComposite)
1710
1711 renderer.close_group('figure')
~\Anaconda3\lib\site-packages\matplotlib\image.py in _draw_list_compositing_images(renderer, parent, artists, suppress_composite)
133 if not_composite or not has_images:
134 for a in artists:
--> 135 a.draw(renderer)
136 else:
137 # Composite any adjacent images together
~\Anaconda3\lib\site-packages\matplotlib\artist.py in draw_wrapper(artist, renderer, *args, **kwargs)
36 renderer.start_filter()
37
---> 38 return draw(artist, renderer, *args, **kwargs)
39 finally:
40 if artist.get_agg_filter() is not None:
~\Anaconda3\lib\site-packages\matplotlib\axes\_base.py in draw(self, renderer, inframe)
2643 renderer.stop_rasterizing()
2644
-> 2645 mimage._draw_list_compositing_images(renderer, self, artists)
2646
2647 renderer.close_group('axes')
~\Anaconda3\lib\site-packages\matplotlib\image.py in _draw_list_compositing_images(renderer, parent, artists, suppress_composite)
133 if not_composite or not has_images:
134 for a in artists:
--> 135 a.draw(renderer)
136 else:
137 # Composite any adjacent images together
~\Anaconda3\lib\site-packages\matplotlib\artist.py in draw_wrapper(artist, renderer, *args, **kwargs)
36 renderer.start_filter()
37
---> 38 return draw(artist, renderer, *args, **kwargs)
39 finally:
40 if artist.get_agg_filter() is not None:
~\Anaconda3\lib\site-packages\matplotlib\axis.py in draw(self, renderer, *args, **kwargs)
1204 ticks_to_draw = self._update_ticks()
1205 ticklabelBoxes, ticklabelBoxes2 = self._get_tick_bboxes(ticks_to_draw,
-> 1206 renderer)
1207
1208 for tick in ticks_to_draw:
~\Anaconda3\lib\site-packages\matplotlib\axis.py in _get_tick_bboxes(self, ticks, renderer)
1149 """Return lists of bboxes for ticks' label1's and label2's."""
1150 return ([tick.label1.get_window_extent(renderer)
-> 1151 for tick in ticks if tick.label1.get_visible()],
1152 [tick.label2.get_window_extent(renderer)
1153 for tick in ticks if tick.label2.get_visible()])
~\Anaconda3\lib\site-packages\matplotlib\axis.py in <listcomp>(.0)
1149 """Return lists of bboxes for ticks' label1's and label2's."""
1150 return ([tick.label1.get_window_extent(renderer)
-> 1151 for tick in ticks if tick.label1.get_visible()],
1152 [tick.label2.get_window_extent(renderer)
1153 for tick in ticks if tick.label2.get_visible()])
~\Anaconda3\lib\site-packages\matplotlib\text.py in get_window_extent(self, renderer, dpi)
888 raise RuntimeError('Cannot get window extent w/o renderer')
889
--> 890 bbox, info, descent = self._get_layout(self._renderer)
891 x, y = self.get_unitless_position()
892 x, y = self.get_transform().transform_point((x, y))
~\Anaconda3\lib\site-packages\matplotlib\text.py in _get_layout(self, renderer)
289 _, lp_h, lp_d = renderer.get_text_width_height_descent(
290 "lp", self._fontproperties,
--> 291 ismath="TeX" if self.get_usetex() else False)
292 min_dy = (lp_h - lp_d) * self._linespacing
293
~\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py in get_text_width_height_descent(self, s, prop, ismath)
199 fontsize = prop.get_size_in_points()
200 w, h, d = texmanager.get_text_width_height_descent(
--> 201 s, fontsize, renderer=self)
202 return w, h, d
203
~\Anaconda3\lib\site-packages\matplotlib\texmanager.py in get_text_width_height_descent(self, tex, fontsize, renderer)
446 else:
447 # use dviread. It sometimes returns a wrong descent.
--> 448 dvifile = self.make_dvi(tex, fontsize)
449 with dviread.Dvi(dvifile, 72 * dpi_fraction) as dvi:
450 page, = dvi
~\Anaconda3\lib\site-packages\matplotlib\texmanager.py in make_dvi(self, tex, fontsize)
336 self._run_checked_subprocess(
337 ["latex", "-interaction=nonstopmode", "--halt-on-error",
--> 338 texfile], tex)
339 for fname in glob.glob(basefile + '*'):
340 if not fname.endswith(('dvi', 'tex')):
~\Anaconda3\lib\site-packages\matplotlib\texmanager.py in _run_checked_subprocess(self, command, tex)
306 raise RuntimeError(
307 'Failed to process string with tex because {} could not be '
--> 308 'found'.format(command[0])) from exc
309 except subprocess.CalledProcessError as exc:
310 raise RuntimeError(
RuntimeError: Failed to process string with tex because latex could not be found
<Figure size 432x288 with 1 Axes>
编辑1：
我尝试在运行Windows 10的homePC上运行相同的代码，相同的Python版本和乳胶版本，并且该代码未引发错误，并且按预期绘制了所有内容。 我仍然需要它在我有该问题的笔记本电脑上工作，但是我只想说它出奇地在另一台似乎具有相同设置的PC上运行。
答案 0 :(得分：0)
好的，所以我找到了解决问题的方法。
首先，我卸载了Anaconda。我还删除了在用户目录.anaconda3中找到的文件夹。 我像平常一样重新安装并运行了我的脚本。之后，我有2个外部窗口从LaTex安装软件包。 （我上次没有得到它们）
但是我也正在运行BitDefender，当我想安装它们时，我的防病毒软件不允许他们下载不安全的软件，但没有提及。 我停用了BitDefender并尝试重现LaTex窗口打开的情况。因此，我让我的脚本再次运行，并且两个窗口再次出现。 我现在已经安装了软件包并进行了matplot，其他所有内容现在都可以正常打印。
TL; DR： 对于遇到相同问题的任何人，可能是您的防病毒软件阻止jupyter安装所需的软件包，因此您没有需要绘制的文件。