code: def make_sphere():
      """Make a sphere.
  
      Test that the pyvista-plot directive works correctly when there is
      something to plot.
  
      Examples
      --------
      >>> import pyvista  # must import pyvista for the plotting directive to work
      >>> from samples import make_sphere
      >>> sphere = make_sphere()
      >>> sphere.plot()
  
      """
      return pv.Sphere()
  
imports: import pyvista
label_desc: Use image node_id 1 for calling a global function with example usage: make_sphere() and returns: pv