code: def format_axes(fig):
      for i, ax in enumerate(fig.axes):
          ax.text(0.5, 0.5, "ax%d" % (i + 1), va="center", ha="center")
          ax.tick_params(labelbottom=False, labelleft=False)
  
label_desc: Use image node_id 1 for calling a global function with example usage: format_axes(fig) without return types