code: def refresh(self):
      self.colorCycle = itertools.cycle(colors)
      try:
          self.substitute()
          self.img.config(image=self.image)
      except re.error:
          self.img.config(image=self.imageDimmed)
  
file_path: nltk/nltk/app/nemo_app.py
imports: import itertools
  import re
  from tkinter import SEL_FIRST, SEL_LAST, Frame, Label, PhotoImage, Scrollbar, Text, Tk
label_desc: Use image node_id 3 for calling the Zone obj's underlying member method code with example usage: obj.refresh() without return types