code: def test_axes_eq(default_theme):
      assert default_theme.axes == pv.plotting.themes.Theme().axes
  
      theme = pv.plotting.themes.Theme()
      theme.axes.box = True
      assert default_theme.axes != theme.axes
      assert default_theme.axes != 1
  
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 18 for calling a global function with example usage: test_axes_eq(default_theme) without return types