title: ZipFile.extractall throws ZipFile instance has no attribute 'extractall'
body: <p>Following is my code:</p>
  <pre><code>import zipfile
  from zipfile import ZipFile
  
  def extract(zipFilename, dm_extraction_dir) :
     zipTest = ZipFile(zipFilename)
     zipTest.extractall(dm_extraction_dir)
  
  extract(&quot;myzip.zip&quot;, &quot;C:/Temp&quot;) 
  </code></pre>
  <p>When I execute this code, throws ZipFile instance has no attribute 'extractall', I am using Python 2.5, interpreter is jython, not sure why I am getting this error.</p>