text: '''
  Created on Apr 30, 2019
  
  @author: Burkhard A. Meier
  '''
  #======================
  # imports
  #======================
  import tkinter as tk
  from tkinter import ttk
  
  # Create instance
  win = tk.Tk()   
  
  # Add a title       
  win.title("Python GUI")  
  
  # Modify adding a Label
  a_label = ttk.Label(win, text="A Label")
  a_label.grid(column=0, row=0)
  
  # Modified Button Click Function
  def click_me():
      action.configure(text='Hello ' + name.get())
  
  # Changing our Label
  ttk.Label(win, text="Enter a name:").grid(column=0, row=0)
  
  # Adding a Textbox Entry widget
  name = tk.StringVar()
  name_entered = ttk.Entry(win, width=12, textvariable=name)
  name_entered.grid(column=0, row=1)
  
  # Adding a Button
  action = ttk.Button(win, text="Click Me!", command=click_me)   
  action.grid(column=1, row=1)
  
  name_entered.focus()      # Place cursor into name Entry
  #======================
  # Start GUI
  #======================
  win.mainloop()