Function op

pandas/tests/apply/test_frame_transform.py:217–220

(x)

def test_transform_failure_valueerror():
    # GH 40211
    def op(x):
        if np.sum(np.sum(x)) < 10:
            raise ValueError
        return x

    df = DataFrame({"A": [1, 2, 3], "B": [400, 500, 600]})
    msg = "Transform function failed"