new_contents: # View more python learning tutorial on my Youtube and Youku channel!!!
  
  # Youtube video tutorial: https://www.youtube.com/channel/UCdyjiB5H8Pu7aDTNVXTTpcg
  # Youku video tutorial: http://i.youku.com/pythontutorial
  
  import tkinter as tk
  
  window = tk.Tk()
  window.title('Welcome to Mofan Python')
  window.geometry('450x300')
  
  # welcome image
  canvas = tk.Canvas(window, height=200, width=500)
  image_file = tk.PhotoImage(file='welcome.gif')
  image = canvas.create_image(0,0, anchor='nw', image=image_file)
  canvas.pack(side='top')
  
  # user information
  tk.Label(window, text='User name: ').place(x=50, y= 150)
  tk.Label(window, text='Password: ').place(x=50, y= 190)
  
  var_usr_name = tk.StringVar()
  var_usr_name.set('example@python.com')
  entry_usr_name = tk.Entry(window, textvariable=var_usr_name)
  entry_usr_name.place(x=160, y=150)
  var_usr_pwd = tk.StringVar()
  entry_usr_pwd = tk.Entry(window, textvariable=var_usr_pwd, show='*')
  entry_usr_pwd.place(x=160, y=190)
  
  def usr_login():
      pass
  def usr_sign_up():
      pass
  
  # login and sign up button
  btn_login = tk.Button(window, text='Login', command=usr_login)
  btn_login.place(x=170, y=230)
  btn_sign_up = tk.Button(window, text='Sign up', command=usr_sign_up)
  btn_sign_up.place(x=270, y=230)
  
  window.mainloop()
  
  
  
  
  
  
  
subject: create tk13