Comment #4 on issue 2689 by smi...@gmail.com: Set and Dict args should be
sorted
http://code.google.com/p/sympy/issues/detail?id=2689
OK, I have the basics defined (__eq__, __cmp__, __iter__ and sort the
args) so now:
>>> args = [(1,2),(2,1)]
>>> for o in [Dict, Tuple, Set]:
... if o != Tuple: assert o(*args) == o(*reversed(args))
... l = [o(*args), o(*reversed(args))]
... assert sorted(l) == sorted(reversed(l))
...
>>> for i in Dict(*args):
... print i
...
1
2
>>> for i in Set(*args):
... print i
...
(1, 2)
(2, 1)
>>> for i in Tuple(*args):
... print i
...
(1, 2)
(2, 1)
But maybe Basic should be defining __iter__ (to iter over args)
__cmp__ and __eq__. Is there any reason not to have it so?
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