What does np.random.seed(2) do?

[digitalspecialists (RobG)]

@Jarmos

what I understand, is that, “a fixed seed” is necessary for RandomState to produce the same results every time.

Note there are other randomisers in play for other libraries in use that you may want to set to constrain results further. Eg See Accumulating Gradients - #28 by kcturgutlu