def __init__(self, parent=None, key_name=None, _app=None, **kwds):
    super(Expando, self).__init__(parent, key_name, _app, **kwds)
    self._dynamic_properties = {}
    for prop, value in kwds.iteritems():
      if prop not in self._all_properties and prop != 'key':



        if not (hasattr(getattr(type(self), prop, None), '__set__')):
          setattr(self, prop, value)
        else:
          check_reserved_word(prop)
Creates a new instance of this expando model.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/db/__init__.py/Expando.__init__