code: def get_zipped_file(url, encoding_error_opt='ignore'):
      
      remotezip = urllib2.urlopen(url)
      raw_contents = cStringIO.StringIO(remotezip.read())
      target_zip = zipfile.ZipFile(raw_contents)
      first_filename = target_zip.namelist()[0]
      return unicode(target_zip.read(first_filename), errors=encoding_error_opt)
docs: Download and unzip the report file at the given URL.
  
      Downloads and unzips the CO-TRACER archive at the given URL. This is not
      intended for data outside of the CO-TRACER official site and it will
      automatically extract the first file found in the downloaded zip archive
      as the CO-TRACER website produces single file archives. Note that the
      contents of that file are loaded directly into memory.
  
      @param url: The URL to download the archive from.
      @type url: str
      @return: The contents of the first file found in the provided archive.
      @rtype: str