It isn't obvious to me that this issue is valid.

Some more context:

class _localbase(object):
    __slots__ = '_local__key', '_local__args', '_local__lock'

    def __new__(cls, *args, **kw):
        self = object.__new__(cls)
        key = '_local__key', 'thread.local.' + str(id(self))
        object.__setattr__(self, '_local__key', key)
        object.__setattr__(self, '_local__args', (args, kw))
        object.__setattr__(self, '_local__lock', RLock())

        if args or kw and (cls.__init__ is object.__init__):
            raise TypeError("Initialization arguments are not supported")