On Aug 20, 12:30 pm, William Stein <wst...@gmail.com> wrote:
> Since you mention "InputForm[]", I can't help but mention Sage's
> analogue of that (written by Carl Witty), which is called
> "sage_input":

After posting, I knew I should have done a modicum of research first.
Thanks for the reminder about sage_input().

> sage: a = random_matrix(QQ,4)
> sage: sage_input(a)
> matrix(QQ, [[0, 1, -1, 1/2], [0, -1, -2, 0], [0, 0, 2, 0], [1, 0, -1, 2]])

Maybe I will extend it to (optionally) produce

matrix(QQ, [[0,  1, -1, 1/2],
...         [0, -1, -2,   0],
...         [0,  0,  2,   0],
...         [1,  0, -1,   2]])

for quick-and-easy cut-and-paste into doctests, etc.

Rob

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