xs = np.linspace(-2, 2, 3)
ys = np.linspace(-2, 2, 3)
dx = np.expand_dims(xs, 1) - np.expand_dims(ys, 0)
输出
(3, 1)和(1, 3)的两个array也可以相减
xs = np.linspace(-2, 2, 3)
ys = np.linspace(-2, 2, 3)
dx = np.expand_dims(xs, 1) - np.expand_dims(ys, 0)
输出
(3, 1)和(1, 3)的两个array也可以相减
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