Re: [Numpy-discussion] Adding "maximum difference" to np.testing.assert_array_equal errors

On 19. Dec 2018, at 19:50, Stefan van der Walt wrote:

On Wed, 19 Dec 2018 09:47:01 -0800, Stephan Hoyer wrote:

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Example behavior:

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x = np.array([1, 2, 3]) y = np.array([1, 2, 3.0001]) np.testing.assert_allclose(x, y) AssertionError: Not equal to tolerance rtol=1e-07, atol=0

(mismatch 33.333333333333336%, maximum difference 0.00010000000000021103)

This is a helpful addition; thank you! I don't have a strong preference around whether to also include rtol.

Stéfan _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@python.org https://mail.python.org/mailman/listinfo/numpy-discussion

+1 to this addition. And +1 to also print rtol. I frequently use rtol with assert_allclose, and having the value printed helps quickly choose an appropriate value. Christoph