def lu(self, fn_luid, ignorekeys=[]):
        # look for this LU in cache
        if not self._lu_idx:
            self._buildluindex()
        luinfo = self._lu_idx[fn_luid]
        if '_type' not in luinfo:
            # we only have an index entry for the LU. loading the frame will replace this.
            f = self.frame_by_id(luinfo.frameID)
            luinfo = self._lu_idx[fn_luid]
        if ignorekeys:
            return AttrDict(dict((k, v) for k, v in luinfo.items() if k not in ignorekeys))

        return luinfo
Get information about a specific Lexical Unit using the id number
dataset/ETHPy150Open nltk/nltk/nltk/corpus/reader/framenet.py/FramenetCorpusReader.lu