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Sum(1/(n**3 - 1), (n, -oo, -2)).doit() raise UnboundLocalVariable #9908

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gxyd opened this Issue Sep 11, 2015 · 4 comments

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gxyd commented Sep 11, 2015

>>> n = Symbol('n', integer=True)
>>> Sum(1/(n**3 - 1), (n, -oo, -2)).doit()
---------------------------------------------------------------------------
UnboundLocalError                         Traceback (most recent call last)
<ipython-input-5-fc1048a1af47> in <module>()
----> 1 Sum(1/(n**3 - 1), (n, -oo, -2)).doit()

/home/gxyd/Public/sympy/sympy/concrete/summations.py in doit(self, **hints)
    182                 i = i.label
    183 
--> 184             newf = eval_sum(f, (i, a, b))
    185             if newf is None:
    186                 if f == self.function:

/home/gxyd/Public/sympy/sympy/concrete/summations.py in eval_sum(f, limits)
    587     # this can save time when b-a is big.
    588     # We should try to transform to partial fractions
--> 589     value = eval_sum_symbolic(f.expand(), (i, a, b))
    590     if value is not None:
    591         return value

/home/gxyd/Public/sympy/sympy/concrete/summations.py in eval_sum_symbolic(f, limits)
    687             return r
    688 
--> 689     return eval_sum_hyper(f_orig, (i, a, b))
    690 
    691 

/home/gxyd/Public/sympy/sympy/concrete/summations.py in eval_sum_hyper(f, i_a_b)
    764             if cond == False:
    765                 return None
--> 766         return Piecewise((res1 - res2, cond), (old_sum, True))
    767 
    768     if a == S.NegativeInfinity:

UnboundLocalError: local variable 'res1' referenced before assignment
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leosartaj commented Sep 11, 2015

This looks like an indentation issue to me. L-766 should be indented one more block.

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leosartaj commented Sep 11, 2015

@irresolute Maybe you can pick this up.

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rresol commented Sep 12, 2015

@leosartaj sure!

rresol added a commit to rresol/sympy that referenced this issue Sep 15, 2015

Fixed issue sympy#9908
Added test for issue sympy#9908

leosartaj added a commit that referenced this issue Sep 26, 2015

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gxyd commented Sep 26, 2015

closing fixed by #9919

@gxyd gxyd closed this Sep 26, 2015

skirpichev added a commit to diofant/diofant that referenced this issue Feb 12, 2016

Fixed indenation error in summations.py
Also added test for issue sympy/sympy#9908

Conflicts:
	sympy/concrete/summations.py

// minor edits by skirpichev

skirpichev added a commit to skirpichev/diofant that referenced this issue May 13, 2016

Fixed indenation error in summations.py
Also added test for issue sympy/sympy#9908

Conflicts:
	sympy/concrete/summations.py

// minor edits by skirpichev

skirpichev added a commit to skirpichev/diofant that referenced this issue May 21, 2016

Fixed indenation error in summations.py
Also added test for issue sympy/sympy#9908

Conflicts:
	sympy/concrete/summations.py

// minor edits by skirpichev

skirpichev added a commit to skirpichev/diofant that referenced this issue May 22, 2016

Fixed indenation error in summations.py
Also added test for issue sympy/sympy#9908

Conflicts:
	sympy/concrete/summations.py

// minor edits by skirpichev

skirpichev added a commit to skirpichev/diofant that referenced this issue Jun 26, 2016

Fixed indenation error in summations.py
Also added test for issue sympy/sympy#9908

Conflicts:
	sympy/concrete/summations.py

// minor edits by skirpichev

skirpichev added a commit to skirpichev/diofant that referenced this issue Jul 16, 2016

Fixed indenation error in summations.py
Also added test for issue sympy/sympy#9908

// minor edits by skirpichev

Signed-off-by: Sergey B Kirpichev <skirpichev@gmail.com>

skirpichev added a commit to skirpichev/diofant that referenced this issue Nov 2, 2016

Add regression tests & mention closed issues
    close sympy/sympy#3112 (MrvAsympt was added in diofant#6)
    close sympy/sympy#9173 (test was added in 5a510ac)
    close sympy/sympy#9808 (fixed in 09e539b)
    close sympy/sympy#9341 (fixed in af98a00)
    close sympy/sympy#9908 (fixed in cc3fa8d)
    close sympy/sympy#6171 (test added in d278031)
    close sympy/sympy#9276 (diagnose_imports.py removed in ab8c535)
    close sympy/sympy#10201 (fixed in 0d0fc5f)
    close sympy/sympy#9057 (test was added in 8290a0c)
    close sympy/sympy#11159 (test was added in ffb76cb)
    close sympy/sympy#2839 (new AST transformers are used, see diofant#278 and diofant#167)
    close sympy/sympy#11081 (see ed01e16 and bb92329)
    close sympy/sympy#10974 (see 73fc425)
    close sympy/sympy#10806 (test in 539929a)
    close sympy/sympy#10801 (test in 2fe3da5)
    close sympy/sympy#9549 (test in 88bdefa)
    close sympy/sympy#4231 (test was added in fb411d5)
    close sympy/sympy#8634 (see 2fcbb58)
    close sympy/sympy#8481 (see 1ef20d3)
    close sympy/sympy#9956 (fixed in a34735f)
    close sympy/sympy#9747 (see e117c60)
    close sympy/sympy#7853 (see 3e4fbed)
    close sympy/sympy#9634 (see 2be03f5)
    close sympy/sympy#8500 (fixed in diofant#104 and finally in diofant#316)
    close sympy/sympy#9192 (see 9bf622f)
    close sympy/sympy#7130 (see e068fa3)
    close sympy/sympy#8514 (see b2d543b)
    close sympy/sympy#9334 (see 90de625)
    close sympy/sympy#8229 (see 9755b89)
    close sympy/sympy#8061 (see 7054f06)
    close sympy/sympy#7872 (tested in diofant#6)
    close sympy/sympy#3496 (tested in test_log_symbolic)
    close sympy/sympy#2929 (see da7db7a)
    close sympy/sympy#8203 (oo is not a real, see diofant#36)
    close sympy/sympy#7649 (0 is imaginary since diofant#8)
    close sympy/sympy#7256 (fixed in c0a4549)
    close sympy/sympy#6783 (see cb28d63)
    close sympy/sympy#5662 (is_integer issue fixed in 6bfa9f8, there is no is_bounded anymore)
    close sympy/sympy#5295 (fixed with diofant#354)
    close sympy/sympy#4856 (we now have flake/pep tests)
    close sympy/sympy#4555 (flake8 enabled after diofant#214)
    close sympy/sympy#5773 (cmp_to_key removed after diofant#164 and c9acbf0)
    close sympy/sympy#5484 (see above)

    Added regression tests:
    from https://groups.google.com/forum/#!topic/sympy/LkTMQKC_BOw
    fixes sympy/sympy#8825 (probably via diofant#209)
    fixes sympy/sympy#8635
    fixes sympy/sympy#8157
    fixes sympy/sympy#7872
    fixes sympy/sympy#7599
    fixes sympy/sympy#6179
    fixes sympy/sympy#5415
    fixes sympy/sympy#2865
    fixes sympy/sympy#5907
    fixes sympy/sympy#11722

    Closes diofant#347

skirpichev added a commit to skirpichev/diofant that referenced this issue Nov 2, 2016

Add regression tests & mention closed issues
    close sympy/sympy#3112 (MrvAsympt was added in diofant#6)
    close sympy/sympy#9173 (test was added in 5a510ac)
    close sympy/sympy#9808 (fixed in 09e539b)
    close sympy/sympy#9341 (fixed in af98a00)
    close sympy/sympy#9908 (fixed in cc3fa8d)
    close sympy/sympy#6171 (test added in d278031)
    close sympy/sympy#9276 (diagnose_imports.py removed in ab8c535)
    close sympy/sympy#10201 (fixed in 0d0fc5f)
    close sympy/sympy#9057 (test was added in 8290a0c)
    close sympy/sympy#11159 (test was added in ffb76cb)
    close sympy/sympy#2839 (new AST transformers are used, see diofant#278 and diofant#167)
    close sympy/sympy#11081 (see ed01e16 and bb92329)
    close sympy/sympy#10974 (see 73fc425)
    close sympy/sympy#10806 (test in 539929a)
    close sympy/sympy#10801 (test in 2fe3da5)
    close sympy/sympy#9549 (test in 88bdefa)
    close sympy/sympy#4231 (test was added in fb411d5)
    close sympy/sympy#8634 (see 2fcbb58)
    close sympy/sympy#8481 (see 1ef20d3)
    close sympy/sympy#9956 (fixed in a34735f)
    close sympy/sympy#9747 (see e117c60)
    close sympy/sympy#7853 (see 3e4fbed)
    close sympy/sympy#9634 (see 2be03f5)
    close sympy/sympy#8500 (fixed in diofant#104 and finally in diofant#316)
    close sympy/sympy#9192 (see 9bf622f)
    close sympy/sympy#7130 (see e068fa3)
    close sympy/sympy#8514 (see b2d543b)
    close sympy/sympy#9334 (see 90de625)
    close sympy/sympy#8229 (see 9755b89)
    close sympy/sympy#8061 (see 7054f06)
    close sympy/sympy#7872 (tested in diofant#6)
    close sympy/sympy#3496 (tested in test_log_symbolic)
    close sympy/sympy#2929 (see da7db7a)
    close sympy/sympy#8203 (oo is not a real, see diofant#36)
    close sympy/sympy#7649 (0 is imaginary since diofant#8)
    close sympy/sympy#7256 (fixed in c0a4549)
    close sympy/sympy#6783 (see cb28d63)
    close sympy/sympy#5662 (is_integer issue fixed in 6bfa9f8, there is no is_bounded anymore)
    close sympy/sympy#5295 (fixed with diofant#354)
    close sympy/sympy#4856 (we now have flake/pep tests)
    close sympy/sympy#4555 (flake8 enabled after diofant#214)
    close sympy/sympy#5773 (cmp_to_key removed after diofant#164 and c9acbf0)
    close sympy/sympy#5484 (see above)

    Added regression tests:
    from https://groups.google.com/forum/#!topic/sympy/LkTMQKC_BOw
    fixes sympy/sympy#8825 (probably via diofant#209)
    fixes sympy/sympy#8635
    fixes sympy/sympy#8157
    fixes sympy/sympy#7872
    fixes sympy/sympy#7599
    fixes sympy/sympy#6179
    fixes sympy/sympy#5415
    fixes sympy/sympy#2865
    fixes sympy/sympy#5907
    fixes sympy/sympy#11722

    Closes diofant#347
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