def update(self, iterable):
        """Update the list by adding all elements from *iterable*."""
        _maxes, _lists, _keys = self._maxes, self._lists, self._keys
        values = sorted(iterable, key=self._key)

        if _maxes:
            if len(values) * 4 >= self._len:
                values.extend(chain.from_iterable(_lists))
                values.sort(key=self._key)
                self._clear()
            else:
                _add = self.add
                for val in values:
                    _add(val)
                return

        _load, _index = self._load, self._index
        _lists.extend(values[pos:(pos + _load)]
                      for pos in range(0, len(values), _load))
        _keys.extend(list(map(self._key, _list)) for _list in _lists)
        _maxes.extend(sublist[-1] for sublist in _keys)
        self._len = len(values)
        del _index[:]
def update ( self , iterable ) : _maxes , _lists , _keys = self . _maxes , self . _lists , self . _keys values = sorted ( iterable , key = self . _key ) if _maxes : if len ( values ) * 4 >= self . _len : values . extend ( chain . from_iterable ( _lists ) ) values . sort ( key = self . _key ) self . _clear ( ) else : _add = self . add for val in values : _add ( val ) return _load , _index = self . _load , self . _index _lists . extend ( values [ pos : ( pos + _load ) ] for pos in range ( 0 , len ( values ) , _load ) ) _keys . extend ( list ( map ( self . _key , _list ) ) for _list in _lists ) _maxes . extend ( sublist [ - 1 ] for sublist in _keys ) self . _len = len ( values ) del _index [ : ]
Update the list by adding all elements from *iterable*.