Comment #11 on issue 2865 by [email protected]: str(Matrix(...)) should
give "Matrix(...)"
http://code.google.com/p/sympy/issues/detail?id=2865
Current documentation says str should look nice, repr should play nice with
eval. Nowhere (from what's been quoted) does it say that one should be able
to copy and sympify what has been printed.
So currently, repr for Matrix is what is broken since it should return what
can be eval'ed and it doesn't. It returns the repr of str:
m=randMatrix(2,2)
m
[21, 2]
[75, 95]
repr(m)
'[21, 2]\n[75, 95]'
So if I change my work to make repr(m) give `Matrix([[21, 2], [75, 95]])`,
would that be agreeable?
We can then either 1) update the str docstring to say that sympify should
be able to interpret the str form or 2) make sympify able to parse a
matrix...and that's going to be a headache for expressions whereas my
current implementation is going to make that fairly easy.
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