Method __array_finalize__

numpy/core/tests/test_umath.py:4675–4678

(self, obj)

def test_outer_bad_subclass():
    class BadArr1(np.ndarray):
        def __array_finalize__(self, obj):
            # The outer call reshapes to 3 dims, try to do a bad reshape.
            if self.ndim == 3:
                self.shape = self.shape + (1,)

        def __array_prepare__(self, obj, context=None):
            return obj