def get_output_stream(encoding=anytemplate.compat.ENCODING,
                      ostream=sys.stdout):
    """
    Get output stream take care of characters encoding correctly.

    :param ostream: Output stream (file-like object); sys.stdout by default
    :param encoding: Characters set encoding, e.g. UTF-8
    :return: sys.stdout can output encoded strings

    >>> get_output_stream("UTF-8")  # doctest: +ELLIPSIS
    <encodings.utf_8.StreamWriter ... at 0x...>
    """
    return codecs.getwriter(encoding)(ostream)