import error on debian

asked 2019-11-16 22:56:32 +0200

stockh0lm
270 ●4 ●8 ●26

I get this error

 sage ~/src/brot.sage
Traceback (most recent call last):
  File "/home/andreas/src/brot.sage.py", line 3, in <module>
    from sage.all_cmdline import *   # import sage library
  File "/usr/lib/python2.7/dist-packages/sage/all_cmdline.py", line 26, in <module>
    from sage.all import *
  File "/usr/lib/python2.7/dist-packages/sage/all.py", line 102, in <module>
    from sage.modular.all    import *
  File "/usr/lib/python2.7/dist-packages/sage/modular/all.py", line 4, in <module>
    from .quatalg.all import *
  File "/usr/lib/python2.7/dist-packages/sage/modular/quatalg/__init__.py", line 4, in <module>
    from . import all
  File "/usr/lib/python2.7/dist-packages/sage/modular/quatalg/all.py", line 3, in <module>
    from .brandt import BrandtModule
  File "/usr/lib/python2.7/dist-packages/sage/modular/quatalg/brandt.py", line 206, in <module>
    from sage.modular.hecke.all import (AmbientHeckeModule, HeckeSubmodule, HeckeModuleElement)
  File "/usr/lib/python2.7/dist-packages/sage/modular/hecke/all.py", line 20, in <module>
    from .ambient_module import AmbientHeckeModule, is_AmbientHeckeModule
  File "/usr/lib/python2.7/dist-packages/sage/modular/hecke/ambient_module.py", line 38, in <module>
    from sage.modular.arithgroup.all import Gamma0 # for Sturm bound
  File "/usr/lib/python2.7/dist-packages/sage/modular/arithgroup/__init__.py", line 4, in <module>
    from . import all
  File "/usr/lib/python2.7/dist-packages/sage/modular/arithgroup/all.py", line 6, in <module>
    from .congroup_generic import is_CongruenceSubgroup, CongruenceSubgroup_constructor as CongruenceSubgroup
  File "/usr/lib/python2.7/dist-packages/sage/modular/arithgroup/congroup_generic.py", line 28, in <module>
    from sage.groups.matrix_gps.all import MatrixGroup
  File "/usr/lib/python2.7/dist-packages/sage/groups/matrix_gps/all.py", line 13, in <module>
    import sage.groups.matrix_gps.pickling_overrides
  File "/usr/lib/python2.7/dist-packages/sage/groups/matrix_gps/pickling_overrides.py", line 7, in <module>
    from sage.groups.matrix_gps.finitely_generated import FinitelyGeneratedMatrixGroup_gap
  File "/usr/lib/python2.7/dist-packages/sage/groups/matrix_gps/finitely_generated.py", line 81, in <module>
    from sage.groups.matrix_gps.matrix_group import (
  File "/usr/lib/python2.7/dist-packages/sage/groups/matrix_gps/matrix_group.py", line 61, in <module>
    from sage.groups.libgap_wrapper import ParentLibGAP
  File "sage/libs/gap/element.pxd", line 32, in init sage.groups.libgap_wrapper (build/cythonized/sage/groups/libgap_wrapper.c:9846)
ImportError: /usr/lib/python2.7/dist-packages/sage/libs/gap/element.x86_64-linux-gnu.so: undefined symbol: _GAP_SetEnterStackCount

with this file: cat brot.sage

R, W, R_S, H, H_S, S = var('R W R_S H H_S S')

equations = [ S                 == R_S + H_S,
              R_S               == H_S,
              (R + R_S + W)     == 3 * R_S,
              0.8*(W+R+R_S)     == H + H_S,
              W/(W+R+R_S)       == 0.6,
              R + W+ S +H       == 0.85]

print solve(equations,[R, W, R_S, H, H_S,S ], algorithm="sympy", solution_dict=False)


sage --version
SageMath version 8.6, Release Date: 2019-01-15

I would like to calculate my bread receipt... what is the issue here? This used to work before.

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3 Answers

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answered 2019-11-17 23:39:13 +0200

Emmanuel Charpentier
7057 ●6 ●46 ●137

WorksForMe (TM). On Python3-based Sage 9.0.beta5 running on Debian testing:

charpent@zen-book-flip:~$ cat ~/Temporaire/Sagemath/AskSage48780/import-error-on-debian.sage
R, W, R_S, H, H_S, S = var('R W R_S H H_S S')
equations = [ S                 == R_S + H_S,
              R_S               == H_S,
              (R + R_S + W)     == 3 * R_S,
              0.8*(W+R+R_S)     == H + H_S,
              W/(W+R+R_S)       == 0.6,
              R + W+ S +H       == 0.85]
print(solve(equations,[R, W, R_S, H, H_S,S ], algorithm="sympy", solution_dict=False))
charpent@zen-book-flip:~$ sage ~/Temporaire/Sagemath/AskSage48780/import-error-on-debian.sage
[{R: 0.0314814814814815, W: 0.283333333333333, R_S: 0.157407407407407, H: 0.220370370370370, H_S: 0.157407407407407, S: 0.314814814814815}]

You'll note that Sympy insists on giving its solutions as dictionaries...

You'll note that your error stack starts by quoting lines from your input file, whoch bears very little semblance to what you have given us as your input file.

Did you play with hard links recently ? or have had disk troubles ?

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answered 2019-12-16 17:32:22 +0200

stockh0lm
270 ●4 ●8 ●26

the brot.sage.py file that gets generated automatically from my brot.sage file looks like this:

# This file was *autogenerated* from the file brot.sage
from sage.all_cmdline import *   # import sage library

_sage_const_3 = Integer(3); _sage_const_0p8 = RealNumber('0.8'); _sage_const_0p85 = RealNumber('0.85'); _sage_const_0p4 = RealNumber('0.4'); _sage_const_0p6 = RealNumber('0.6')
R, W, R_S, H, H_S, S = var('R W R_S H H_S S')

equations = [ S                 == R_S + H_S,
              R_S               == H_S,
              (R + R_S + W)     == _sage_const_3  * R_S,
              _sage_const_0p8 *(W+R+R_S)     == H + H_S,
              W/(W+R+R_S)       == _sage_const_0p6 ,
              R + W+ S +H       == _sage_const_0p85 ]

print solve(equations,[R, W, R_S, H, H_S,S ], algorithm="sympy", solution_dict=False)

And that looks a lot like my input file. It gets re-created if i delete it, too. I see the lines leading up to the stacetrace, too.

Its great that it works for you, though.

Where can start tracking down this problem?

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You say "This used to work before." Before what? What has changed? Your version of Sage? Some system software? By the way, how was Sage installed — built from scratch or a binary distribution?

John Palmieri ( 2019-12-16 19:36:24 +0200 )edit

i run debian testing on this computer. which is a screw-up on my part. I installed binary packages from debian, and now i have a version mismatch, i guess. i try to figure out which package to install from unstable to fix the issue.