code: def on_press(event):
      if event.button != 1:
          return
      x, y = event.xdata, event.ydata
      axzoom.set_xlim(x - 0.1, x + 0.1)
      axzoom.set_ylim(y - 0.1, y + 0.1)
      figzoom.canvas.draw()
  
label_desc: Use image node_id 1 for calling a global function with example usage: on_press(event) without return types