def human_readable(size):
    """Transform size from bytes to human readable format (kB, MB, ...).

  :param size: Size in bytes.

  """
    for suffix in ['bytes', 'kB', 'MB', 'GB', 'TB']:
        if size < 1024.0:
            return '%3.1f%s' % (size, suffix)
        size /= 1024.0
