code: def show_fps(self, fps):
      nbr_tri = self.mesh.n_faces
      msg = "FPS - %0.2f and nbr Tri %s " % (float(fps), int(nbr_tri))
      # NOTE: We can't use showMessage in PyQt5 because it causes
      #       a draw event loop (show_fps for every drawing event,
      #       showMessage causes a drawing event, and so on).
      self.status_label.setText(msg)
  
imports: from PyQt5 import QtCore, QtWidgets
  import sys
  import numpy
  from vispy import app, gloo
  from vispy.util.transforms import perspective, translate, rotate
  from vispy.geometry import meshdata
  from vispy.geometry import generation
label_desc: Use image node_id 3 for calling the MainWindow obj's underlying member method code with example usage: obj.show_fps(fps) without return types