code: def test_tex_restart_after_error():
      fig = plt.figure()
      fig.suptitle(r"\oops")
      with pytest.raises(ValueError):
          fig.savefig(BytesIO(), format="pgf")
  
      fig = plt.figure()  # start from scratch
      fig.suptitle(r"this is ok")
      fig.savefig(BytesIO(), format="pgf")
  
imports: import datetime
  from io import BytesIO
  import os
  import shutil
  import numpy
  from packaging.version import parse
  import pytest
  import matplotlib
  import matplotlib.pyplot
  from matplotlib.testing import _has_tex_package, _check_for_pgf
  from matplotlib.testing.exceptions import ImageComparisonFailure
  from matplotlib.testing.compare import compare_images
  from matplotlib.backends.backend_pgf import PdfPages
  from matplotlib.testing.decorators import _image_directories, check_figures_equal, image_comparison
  from matplotlib.testing._markers import needs_ghostscript, needs_pgf_lualatex, needs_pgf_pdflatex, needs_pgf_xelatex
label_desc: Use image node_id 13 for calling a global function with example usage: test_tex_restart_after_error() without return types