A patch at:
http://trac.sagemath.org/sage_trac/ticket/10604
adds NumPy arrays as input to the diagonal_matrix() constructor.
Rob
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For
Should conversion from numpy arrays/matrices to lists and sage vectors/
matrices be implemented by a .sage() method on the numpy array/
matrix? This is more consistent with the behaviour interface objects.
diagonal_matrix(), matrix(), etc could then outsource the conversion
steps to .sage(),
