class_docstr: A simple progress bar that shows a percentage progress in
  the given colour.
class_docstr_tok: ["A","simple","progress","bar","that","shows","a","percentage","progress","in","the","given","colour","."]
code: def __init__(self, *args, **kwargs):
      tk.Frame.__init__(self, *args, **kwargs)
      self.canvas = tk.Canvas(
          self,
          height="20",
          width="60",
          background="white",
          borderwidth=3,
      )
      self.canvas.pack(fill=tk.X, expand=1)
      self.rect = self.text = None
      self.canvas.bind("<Configure>", self.paint)
      self.setProgressFraction(0.0)
  
imports: import sys
  import traceback
  import unittest
  import tkinter
  from tkinter import messagebox
  from tkinter import filedialog
  from tkinter import simpledialog
label_desc: Use image node_id 1 to create a new ProgressBar object from inherited base classes: tk with example: obj = ProgressBar()