def __getattr__(self, key):
        if dir(self.ns) in key:
            if isinstance(getattr(self.ns, key), property):
                return self._property_map(key)
            else:
                return partial(self._function_map, key)
        else:
            raise AttributeError(key)
dataset/ETHPy150Open dask/dask/dask/dataframe/core.py/Accessor.__getattr__/swapped operands of `in`