title: how to add shape in turtle
body: <p>I am trying to re-create the legend of zelda 1986 version in python and I immediately ran into a problem. I cant add the link gif to be the shape. Here is my code:</p>
  
  <pre><code>from turtle import*
  screen=Screen()
  link=Turtle()
  walk="grid-cell-18443-1434401894-3.gif"
  sword="legend-of-zelda-86.gif"
  screen.addshape(walk)
  screen.addshape(sword)
  link.shape("walk")
  </code></pre>
  
  <p>I got an error. in short,</p>
  
  <pre><code>"_tkinter.TclError: couldn't open "grid-cell-18443-1434401894-3.gif": 
  no such file or directory"
  </code></pre>
  
  <p>It is a real file in the downloads folder! Please help!</p>
  
  <p>And thank you in advance.</p>