import sys;

if sys.version_info < ( 3, 0 ):
  import StringIO;
  contentInMemory = StringIO.StringIO();
else:
  import io;
  contentInMemory = io.StringIO();

import tarfile;

if __name__ == '__main__':
  print( '[INFOS]> python version ' + str( sys.version_info.major ) + '.' + str( sys.version_info.minor ) + '.' + str( sys.version_info.micro ));
  contentInMemory.write( 'bar' );
  contentInMemory.seek( 0 );
  tarContainer = tarfile.open( '/tmp/example.tar', 'w' );
  newFile = tarfile.TarInfo( 'foo.txt' );
  newFile.size = len( contentInMemory.getvalue());
  tarContainer.addfile( newFile, contentInMemory );
  tarContainer.close();