title: How to make the turtle follow the mouse in Python 3.6
body: <p>I'm assigned to create a similar version of <code>slither.io</code> in python. I planned on using <code>Turtle</code>. How do I make the <code>turtle</code> follow my mouse without having to click every time? 
  This is how I would do it when clicking, but I would rather not have to click:</p>
  
  <pre><code>from turtle import *
  turtle = Turtle()
  screen = Screen()
  screen.onscreenclick(turtle.goto)
  turtle.getscreen()._root.mainloop()
  </code></pre>