title: Turtle gives error: AttributeError: 'Turtle' object has no attribute 'onkeyrelease'
body: <p>I am trying to add 1 every time I release a key:</p>
  
  <pre><code>from turtle import *
  import turtle
  turtle1 = Turtle()
  screen = turtle1.getscreen()
  goPressed = False
  </code></pre>
  
  <p>imported Turtle...</p>
  
  <pre><code>currentWatts=0
  
  def onaclicked():
       global currentWatts
       currentWatts+=1
       print (currentWatts)
  </code></pre>
  
  <p>defined my function to be run when the key: 1, is released</p>
  
  <pre><code>turtle.onkeyrelease(onaclicked, "1")
  </code></pre>
  
  <p>for some reason <code>onkeyrelease</code> isn't there even though I imported Turtle and checked in Python documentation. It SHOULD work, shouldn't it? Did I improperly import? Can you please help me?</p>
  
  <p>The reason I want it to be <code>onkeyrelease</code> instead of <code>onkey</code>, is because it is for a game. With <code>onkey</code>, when you hold your finger on the key, it adds 1 to currentWatts every around 0.25 seconds. You could cheat by placing something on the key so I want it only to add 1 when you release the key.</p>