title: Boto3 listing files within an s3 object
body: <p>is there a way to use boto3 to print the filenames within an s3 bucket object?</p>
  <p>the bucket looks like this</p>
  <ol>
  <li>Bucket</li>
  </ol>
  <ul>
  <li>Object1
  <ul>
  <li>File 1</li>
  <li>File 2</li>
  </ul>
  </li>
  <li>Object 2
  <ul>
  <li>File3</li>
  <li>File4</li>
  </ul>
  </li>
  </ul>
  <p>Is there a way to use boto3 to print the names of files?</p>