code: def _simple_init(self, *args, **kw):
    
    type(self).__base__.__init__(self, *args, **kw)
docs: trivial init method that just calls base class's __init__()
  
    This method is attached to classes that don't define __init__(). It is needed
    because LockAttributesMetaclass must decorate the __init__() method of
    its target class.