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generalized Gell-Mann matrices

Does anyone know of an implementation of the generalized Gell-Mann matrices? They are defined here:

There is a nice Mathematica demonstration about the dimension 3 case:

Failing that, I would like to figure out how to put them in from scratch. Specifically, given a dimension, I would like a list of the Gell-Mann matrices and to be able to multiply and to take the commutator of two of them. The problem is that I do not have any ideas for turning these rules into sage code and creating a collection of matrices in this way.