Updates:
Status: Accepted
Labels: Milestone-Release0.6.5
Comment #1 on issue 1376 by ondrej.certik: sum doesn't works for lists of
symbols
http://code.google.com/p/sympy/issues/detail?id=1376
the sum() is meant to be used like this:
In [5]: sum(1/x, (x, 1, 4))
Out[5]:
25
──
12
In [6]: sum(1/x, (x, 1, oo))
Out[6]: Sum(1/x, (x, 1, oo))
But I agree it's a serious problem that we have overridden the built-in sum
and
changed the signature.
Do you have some idea to fix this? In any case, we should fix this in the
next release.
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