title: Make a file in s3 public using python and boto
body: <p>I have thins link below, and when I try to acess it it appears an xml file saying "Acess denied".</p>
  
  <p>And I need to go to aws managment console and make this <code>part-0000</code> file public so I can acess it.</p>
  
  <p>Do you know how can I give permissions using boto with python so I can acess this link without needed to go to aws managmet console and make the file public?</p>
  
  <pre><code>downloadLink = 'https://s3.amazonaws.com/myFolder/uploadedfiles/2015423/part-00000'
  </code></pre>