Method __len__

numpy/core/tests/test_multiarray.py:1115–1116

(self)

            def __getitem__(self, item):
                return type(self)(self._data[item])
            def __len__(self):
                return len(self._data)

        # len(d) should give 3, but len(d[0]) will fail
        d = A([1,2,3])