title: Peano Curve in python tkinter recursive
body: <p>I'm trying to find out how to draw a peano curve in tkinter. Should I use <code>create_line</code>?</p>
  
  <p>My second question is how to start writing peano_curve function recursively: where to start drawing, setting steps, setting shutdown condition and so on. Can anyone help me to write this function? I haven't found anything useful on the Internet so far.</p>