How to use the ftfy.fix_encoding function in ftfy

if not gold_standard:
        return [u'', u'']

    if not cetr:
        content_comments = RE_COMMENTS_DELIM.split(gold_standard, maxsplit=1)
        # if no comments delimiter found, append empty comments string
        if len(content_comments) == 1:
            content_comments = [content_comments[0], u'']
    else:
        tree = etree.fromstring(gold_standard, parser=etree.HTMLParser())
        content_comments = [u' '.join(text_from_subtree(tree)), u'']

    # fix text in case of mangled encodings
    content_comments = [ftfy.fix_encoding(content_comments[0]).strip(),
                        ftfy.fix_encoding(content_comments[1]).strip()]

    return content_comments

gold_standard = None

    if not gold_standard:
        return [u'', u'']

    if not cetr:
        content_comments = RE_COMMENTS_DELIM.split(gold_standard, maxsplit=1)
        # if no comments delimiter found, append empty comments string
        if len(content_comments) == 1:
            content_comments = [content_comments[0], u'']
    else:
        tree = etree.fromstring(gold_standard, parser=etree.HTMLParser())
        content_comments = [u' '.join(text_from_subtree(tree)), u'']

    # fix text in case of mangled encodings
    content_comments = [ftfy.fix_encoding(content_comments[0]).strip(),
                        ftfy.fix_encoding(content_comments[1]).strip()]

    return content_comments

def fix_component_encodings(self, tags):
        return {k: ftfy.fix_encoding(safe_decode(v)) for k, v in six.iteritems(tags)}

Returns:
        str
    """
    fname = os.path.join(
        data_dir, RAW_HTML_DIRNAME, fileroot + RAW_HTML_EXT)
    encodings = (encoding,) if encoding else ('utf-8', 'iso-8859-1')  # 'utf-16'
    for encoding in encodings:
        try:
            with io.open(fname, mode='rt', encoding=encoding) as f:
                raw_html = f.read()
            break
        except (UnicodeDecodeError, UnicodeError):
            raw_html = None

    return ftfy.fix_encoding(raw_html).strip()

def main():
    print(ftfy.fix_encoding('주문하다 - to intent for?'))