self.language_file = None
        self.http_accept_language = request.env.http_accept_language
        self.requested_languages = self.force(self.http_accept_language)
        self.lazy = True
        self.otherTs = {}

    def get_possible_languages(self):
        possible_languages = [lang for lang in self.current_languages]
        file_ending = re.compile("\.py$")
        for langfile in os.listdir(os.path.join(self.folder,'languages')):
            if file_ending.search(langfile):
                possible_languages.append(file_ending.sub('',langfile))
        return possible_languages

    def set_current_languages(self, *languages):
        if len(languages) == 1 and isinstance(languages[0], (tuple, list)):
            languages = languages[0]
        self.current_languages = languages
        self.force(self.http_accept_language)

    def force(self, *languages):
        if not languages or languages[0] is None:
            languages = []
        if len(languages) == 1 and isinstance(languages[0], (str, unicode)):
            languages = languages[0]
        if languages:
            if isinstance(languages, (str, unicode)):
                accept_languages = languages.split(';')
                languages = []

                    self.language_file = filename
                    self.t = read_dict(filename)
                    return languages
        self.language_file = None
        self.t = {}  # ## no language by default
        return languages

    def __call__(self, message, symbols={}, language=None):
        if not language:
            if self.lazy:
                return lazyT(message, symbols, self)
            else:
                return self.translate(message, symbols)
        else:
            try:

        T(' hello world ') -> ' hello world '
        T(' hello world ## token') -> 'hello world'
        T('hello ## world ## token') -> 'hello ## world'

        the ## notation is ignored in multiline strings and strings that
        start with ##. this is to allow markmin syntax to be translated
        """
        #for some reason languages.py gets executed before gaehandler.py
        # is able to set web2py_runtime_gae, so re-check here
        is_gae = settings.global_settings.web2py_runtime_gae
        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:
            tokens[0] = tokens[0].strip()
            message = tokens[0] + '##' + tokens[1].strip()
        mt = self.t.get(message, None)
        if mt is None:
            self.t[message] = mt = tokens[0]
            if self.language_file and not is_gae:
                write_dict(self.language_file, self.t)
        if symbols or symbols == 0:
            return mt % symbols
        return mt

    for language in listdir(path, '^\w+(\-\w+)?\.py$'):
        findT(application_path, language[:-3])


if __name__ == '__main__':
    import doctest
    doctest.testmod()