What is the Numpy slicing notation in this code?

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# split into inputs and outputs

X, y = data[:, :-1], data[:, -1]

print(X.shape, y.shape)

Can someone explain the second line of code with reference to specific documentation? I know its slicing but the I couldn't find any reference for the notation ":-1" anywhere. Please give the specific documentation portion.

Thank you

It results in slicing, most probably using numpy and it is being done on a data of shape (610, 14)



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