How to use the portalocker.read_locked function in portalocker

def findT(path, language=DEFAULT_LANGUAGE):
    """
    must be run by the admin app
    """
    lang_file = pjoin(path, 'languages', language + '.py')
    sentences = read_dict(lang_file)
    mp = pjoin(path, 'models')
    cp = pjoin(path, 'controllers')
    vp = pjoin(path, 'views')
    mop = pjoin(path, 'modules')
    for filename in \
            listdir(mp, '^.+\.py$', 0) + listdir(cp, '^.+\.py$', 0)\
            + listdir(vp, '^.+\.html$', 0) + listdir(mop, '^.+\.py$', 0):
        data = read_locked(filename)
        items = regex_translate.findall(data)
        for item in items:
            try:
                message = safe_eval(item)
            except:
                continue  # silently ignore inproperly formatted strings
            if not message.startswith('#') and not '\n' in message:
                tokens = message.rsplit('##', 1)
            else:
                # this allows markmin syntax in translations
                tokens = [message]
            if len(tokens) == 2:
                message = tokens[0].strip() + '##' + tokens[1].strip()
            if message and not message in sentences:
                sentences[message] = message
    if not '!langcode!' in sentences:

def read_plural_dict_aux(filename):
    lang_text = read_locked(filename).replace('\r\n', '\n')
    try:
        return eval(lang_text) or {}
    except Exception:
        e = sys.exc_info()[1]
        status = 'Syntax error in %s (%s)' % (filename, e)
        logging.error(status)
        return {'__corrupted__': status}

def read_plural_dict_aux(filename):
    lang_text = portalocker.read_locked(filename).replace('\r\n', '\n')
    try:
        return eval(lang_text) or {}
    except Exception, e:
        status='Syntax error in %s (%s)' % (filename, e)
        logging.error(status)
        return {'__corrupted__':status}

def read_dict_aux(filename):
    lang_text = portalocker.read_locked(filename).replace('\r\n', '\n')
    clear_cache(filename)
    try:
        return safe_eval(lang_text) or {}
    except Exception, e:
        status = 'Syntax error in %s (%s)' % (filename, e)
        logging.error(status)
        return {'__corrupted__':status}

def read_dict_aux(filename):
    lang_text = read_locked(filename).replace('\r\n', '\n')
    clear_cache(filename)
    try:
        return safe_eval(lang_text) or {}
    except Exception:
        e = sys.exc_info()[1]
        status = 'Syntax error in %s (%s)' % (filename, e)
        logging.error(status)
        return {'__corrupted__': status}