Tensor products in Sage

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Computing the tensor product of two matrices A, B is quite straightforward through A.tensor_product(B).

What about computing the tensor product of some field extensions L and K over $\mathbb{Q}$? Or the tensor products of some ring of integers $\mathcal{O}_K$ of a field extension K and $\mathbb{Z}/\mathbb{pZ}$ over $\mathbb{Z}$.

Other instances of tensor product computations in Sage is welcomed, not necessarily as constructive, but illustrative enough to aid in studying Tensor products.