title: How to scale up picture in Python?
body: <p>I am really do not know how to scale up a part of picture. I need scale up someone's nose.</p>
  
  <p>Example:</p>
  
  <pre><code>def scaleUp():
      pic=makePicture(pickAFile())
      width=getWidth()
      height=getHeight()
  </code></pre>