'return a list of languages supported by Multilingual Wordnet'

def langs(self):

    import os
    langs = [u'eng']
    fileids = self._omw_reader.fileids()
    for fileid in fileids:
        (file_name, file_extension) = os.path.splitext(fileid)
        if (file_extension == u'.tab'):
            langs.append(file_name.split(u'-')[(-1)])
    return langs
