Status: Accepted
Owner: ondrej.certik
Labels: Type-Defect Priority-Medium
New issue 1606 by ondrej.certik: as_sum() is not working
http://code.google.com/p/sympy/issues/detail?id=1606
In [1]: e = Integral(1/(x**4+1), x)
In [2]: e.as_sum(4)
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
/tmp/sympy-0.6.5/<ipython console> in <module>()
/tmp/sympy-0.6.5/sympy/integrals/integrals.pyc in as_sum(self, n, method)
418 raise NotImplementedError("Infinite summation not yet
implemented")
419 sym, limits = self.args[1][0]
--> 420 dx = (limits[1]-limits[0])/n
421 result = 0.
422 for i in range(n):
TypeError: 'NoneType' object is unsubscriptable
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