code: def test_axes_show(default_theme):
      new_value = not default_theme.axes.show
      default_theme.axes.show = new_value
      assert default_theme.axes.show == new_value
  
imports: import os
  import pytest
  import vtk
  import pyvista
  from pyvista import colors
  from pyvista.examples.downloads import download_file
  from pyvista.plotting.themes import DarkTheme, Theme, _set_plot_theme_from_env
  from pyvista.plotting.utilities.gl_checks import uses_egl
label_desc: Use image node_id 21 for calling a global function with example usage: test_axes_show(default_theme) without return types