code: def run_tk(self):
      self.root = tk.Tk()
      self.root.title("Mandelbrot Set")
      self.create_image()
      self.create_label()
      # start event loop
      self.root.mainloop()
  
file_path: pyopencl/examples/demo_mandelbrot.py
imports: import time
  import numpy
  import pyopencl
  from PIL import Image
label_desc: Use image node_id 4 for calling the Mandelbrot obj's underlying member method code with example usage: obj.run_tk() without return types