Comment #5 on issue 2626 by [email protected]: Piecewise should use a different syntax for "otherwise"
http://code.google.com/p/sympy/issues/detail?id=2626
By the way, I'm not convinced that we need the ExprCondPair() object.
I'm sure we don't. I don't remember what was first, Tuple or ExprCondPair, but now the later seems clearly redundant.
Could it ever make sense to have a Piecewise of Tuples?
I don't think so. We shouldn't confuse Tuples with Vectors. Tuple was invented only for making args Basic.
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