[Solved] Two variables with the same value in Python

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No, it’s called unpacking (look it up, it’s common in python)

It’s shorthand for

W_grad = grad_fn(X_train,y_train,W,b)[0]
b_grad = grad_fn(X_train,y_train,W,b)[1]

It will only work if grad_fn(...) returns an iterable with two elements, otherwise it will fail.

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solved Two variables with the same value in Python