[Debian-science-sagemath] Fwd: [sage-support] Sage Crash Report, please help!

Dima Pasechnik dimpase at gmail.com
Mon Dec 16 17:17:27 GMT 2019


This is something specific to the way Sage is (mis)packaged on Debian testing.

---------- Forwarded message ---------
From: Andreas Schuldei <andreas at schuldei.org>
Date: Mon, Dec 16, 2019 at 4:57 PM
Subject: [sage-support] Sage Crash Report, please help!
To: <sage-support at googlegroups.com>


/home/andreas/.ipython/Sage_crash_report.txt

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***************************************************************************

IPython post-mortem report

{'commit_hash': u'033ab93c7',
 'commit_source': 'installation',
 'default_encoding': 'UTF-8',
 'ipython_path': '/usr/lib/python2.7/dist-packages/IPython',
 'ipython_version': '5.8.0',
 'os_name': 'posix',
 'platform': 'Linux-4.9.0-8-amd64-x86_64-with-debian-bullseye-sid',
 'sys_executable': '/usr/bin/python2',
 'sys_platform': 'linux2',
 'sys_version': '2.7.17 (default, Oct 19 2019, 23:36:22) \n[GCC 9.2.1 20191008]'}

***************************************************************************



***************************************************************************

Crash traceback:

---------------------------------------------------------------------------
---------------------------------------------------------------------------
ImportError                                 Python 2.7.17: /usr/bin/python2
                                                   Mon Dec 16 17:47:14 2019
A problem occurred executing Python code.  Here is the sequence of function
calls leading up to the error, with the most recent (innermost) call last.
/usr/share/sagemath/bin/sage-ipython in <module>()
      1 #!/usr/bin/env sage-python23
      2 # -*- coding: utf-8 -*-
      3 """
      4 Sage IPython startup script.
      5 """
      6 
      7 # Display startup banner. Do this before anything else to give the user
      8 # early feedback that Sage is starting.
      9 from sage.misc.banner import banner
     10 banner()
     11 
     12 from sage.repl.interpreter import SageTerminalApp
     13 
     14 app = SageTerminalApp.instance()
---> 15 app.initialize()
        global app.initialize = <bound method SageTerminalApp.initialize of <sage.repl.interpreter.SageTerminalApp object at 0x7ff54ccc6890>>
     16 app.start()

<decorator-gen-110> in initialize(self=<sage.repl.interpreter.SageTerminalApp object>, argv=None)

/usr/lib/python2.7/dist-packages/traitlets/config/application.pyc in catch_config_error(method=<function initialize>, app=<sage.repl.interpreter.SageTerminalApp object>, *args=(None,), **kwargs={})
     72     TRAITLETS_APPLICATION_RAISE_CONFIG_FILE_ERROR = False
     73 else:
     74     raise ValueError("Unsupported value for environment variable: 'TRAITLETS_APPLICATION_RAISE_CONFIG_FILE_ERROR' is set to '%s' which is none of  {'0', '1', 'false', 'true', ''}."% _envvar )
     75 
     76 
     77 @decorator
     78 def catch_config_error(method, app, *args, **kwargs):
     79     """Method decorator for catching invalid config (Trait/ArgumentErrors) during init.
     80 
     81     On a TraitError (generally caused by bad config), this will print the trait's
     82     message, and exit the app.
     83 
     84     For use on init methods, to prevent invoking excepthook on invalid input.
     85     """
     86     try:
---> 87         return method(app, *args, **kwargs)
        method = <function initialize at 0x7ff54c0285d0>
        app = <sage.repl.interpreter.SageTerminalApp object at 0x7ff54ccc6890>
        args = (None,)
        kwargs = {}
     88     except (TraitError, ArgumentError) as e:
     89         app.print_help()
     90         app.log.fatal("Bad config encountered during initialization:")
     91         app.log.fatal(str(e))
     92         app.log.debug("Config at the time: %s", app.config)
     93         app.exit(1)
     94 
     95 
     96 class ApplicationError(Exception):
     97     pass
     98 
     99 
    100 class LevelFormatter(logging.Formatter):
    101     """Formatter with additional `highlevel` record
    102 

/usr/lib/python2.7/dist-packages/IPython/terminal/ipapp.pyc in initialize(self=<sage.repl.interpreter.SageTerminalApp object>, argv=None)
    301 
    302         return super(TerminalIPythonApp, self).parse_command_line(argv)
    303     
    304     @catch_config_error
    305     def initialize(self, argv=None):
    306         """Do actions after construct, but before starting the app."""
    307         super(TerminalIPythonApp, self).initialize(argv)
    308         if self.subapp is not None:
    309             # don't bother initializing further, starting subapp
    310             return
    311         # print self.extra_args
    312         if self.extra_args and not self.something_to_run:
    313             self.file_to_run = self.extra_args[0]
    314         self.init_path()
    315         # create the shell
--> 316         self.init_shell()
        self.init_shell = <bound method SageTerminalApp.init_shell of <sage.repl.interpreter.SageTerminalApp object at 0x7ff54ccc6890>>
    317         # and draw the banner
    318         self.init_banner()
    319         # Now a variety of things that happen after the banner is printed.
    320         self.init_gui_pylab()
    321         self.init_extensions()
    322         self.init_code()
    323 
    324     def init_shell(self):
    325         """initialize the InteractiveShell instance"""
    326         # Create an InteractiveShell instance.
    327         # shell.display_banner should always be False for the terminal
    328         # based app, because we call shell.show_banner() by hand below
    329         # so the banner shows *before* all extension loading stuff.
    330         self.shell = self.interactive_shell_class.instance(parent=self,
    331                         profile_dir=self.profile_dir,

/usr/lib/python2.7/dist-packages/sage/repl/interpreter.pyc in init_shell(self=<sage.repl.interpreter.SageTerminalApp object>)
    745         self.shell.has_sage_extensions = SAGE_EXTENSION in self.extensions
    746 
    747         # Load the %lprun extension if available
    748         try:
    749             import line_profiler
    750         except ImportError:
    751             pass
    752         else:
    753             self.extensions.append('line_profiler')
    754 
    755         if self.shell.has_sage_extensions:
    756             self.extensions.remove(SAGE_EXTENSION)
    757 
    758             # load sage extension here to get a crash if
    759             # something is wrong with the sage library
--> 760             self.shell.extension_manager.load_extension(SAGE_EXTENSION)
        self.shell.extension_manager.load_extension = <bound method ExtensionManager.load_extension of <IPython.core.extensions.ExtensionManager object at 0x7ff54b599d50>>
        global SAGE_EXTENSION = 'sage'
    761 
    762 

/usr/lib/python2.7/dist-packages/IPython/core/extensions.pyc in load_extension(self=<IPython.core.extensions.ExtensionManager object>, module_str='sage')
     70 
     71         Returns the string "already loaded" if the extension is already loaded,
     72         "no load function" if the module doesn't have a load_ipython_extension
     73         function, or None if it succeeded.
     74         """
     75         if module_str in self.loaded:
     76             return "already loaded"
     77         
     78         from IPython.utils.syspathcontext import prepended_to_syspath
     79         
     80         with self.shell.builtin_trap:
     81             if module_str not in sys.modules:
     82                 with prepended_to_syspath(self.ipython_extension_dir):
     83                     __import__(module_str)
     84             mod = sys.modules[module_str]
---> 85             if self._call_load_ipython_extension(mod):
        self._call_load_ipython_extension = <bound method ExtensionManager._call_load_ipython_extension of <IPython.core.extensions.ExtensionManager object at 0x7ff54b599d50>>
        mod = <module 'sage' from '/usr/lib/python2.7/dist-packages/sage/__init__.pyc'>
     86                 self.loaded.add(module_str)
     87             else:
     88                 return "no load function"
     89 
     90     def unload_extension(self, module_str):
     91         """Unload an IPython extension by its module name.
     92 
     93         This function looks up the extension's name in ``sys.modules`` and
     94         simply calls ``mod.unload_ipython_extension(self)``.
     95         
     96         Returns the string "no unload function" if the extension doesn't define
     97         a function to unload itself, "not loaded" if the extension isn't loaded,
     98         otherwise None.
     99         """
    100         if module_str not in self.loaded:

/usr/lib/python2.7/dist-packages/IPython/core/extensions.pyc in _call_load_ipython_extension(self=<IPython.core.extensions.ExtensionManager object>, mod=<module 'sage' from '/usr/lib/python2.7/dist-packages/sage/__init__.pyc'>)
    117         """
    118         from IPython.utils.syspathcontext import prepended_to_syspath
    119 
    120         if (module_str in self.loaded) and (module_str in sys.modules):
    121             self.unload_extension(module_str)
    122             mod = sys.modules[module_str]
    123             with prepended_to_syspath(self.ipython_extension_dir):
    124                 reload(mod)
    125             if self._call_load_ipython_extension(mod):
    126                 self.loaded.add(module_str)
    127         else:
    128             self.load_extension(module_str)
    129 
    130     def _call_load_ipython_extension(self, mod):
    131         if hasattr(mod, 'load_ipython_extension'):
--> 132             mod.load_ipython_extension(self.shell)
        mod.load_ipython_extension = <function load_ipython_extension at 0x7ff54d429dd0>
        self.shell = <sage.repl.interpreter.SageTerminalInteractiveShell object at 0x7ff54c001d50>
    133             return True
    134 
    135     def _call_unload_ipython_extension(self, mod):
    136         if hasattr(mod, 'unload_ipython_extension'):
    137             mod.unload_ipython_extension(self.shell)
    138             return True
    139 
    140     def install_extension(self, url, filename=None):
    141         """Download and install an IPython extension. 
    142 
    143         If filename is given, the file will be so named (inside the extension
    144         directory). Otherwise, the name from the URL will be used. The file must
    145         have a .py or .zip extension; otherwise, a ValueError will be raised.
    146 
    147         Returns the full path to the installed file.

/usr/lib/python2.7/dist-packages/sage/__init__.pyc in load_ipython_extension(*args=(<sage.repl.interpreter.SageTerminalInteractiveShell object>,))
      1 __all__ = ['all']
      2 
      3 # Set sage.__version__ to the current version number. This is analogous
      4 # to many other Python packages.
      5 from sage.version import version as __version__
      6 
      7 # Make sure that the correct zlib library is loaded. This is needed
      8 # to prevent the system zlib to be loaded instead of the Sage one.
      9 # See https://trac.sagemath.org/ticket/23122
     10 import zlib
     11 
     12 # IPython calls this when starting up
     13 def load_ipython_extension(*args):
     14     import sage.repl.ipython_extension
---> 15     sage.repl.ipython_extension.load_ipython_extension(*args)
        sage.repl.ipython_extension.load_ipython_extension = <function load_ipython_extension at 0x7ff54b360650>
        args = (<sage.repl.interpreter.SageTerminalInteractiveShell object at 0x7ff54c001d50>,)
     16 
     17 
     18 # Monkey-patch inspect.isfunction() to support Cython functions.
     19 def isfunction(obj):
     20     """
     21     Check whether something is a function.
     22 
     23     We assume that anything which has a genuine ``__code__``
     24     attribute (not using ``__getattr__`` overrides) is a function.
     25     This is meant to support Cython functions.
     26 
     27     EXAMPLES::
     28 
     29         sage: from inspect import isfunction
     30         sage: def f(): pass
     31         sage: isfunction(f)

/usr/lib/python2.7/dist-packages/sage/repl/ipython_extension.pyc in wrapper(*args=(<sage.repl.interpreter.SageTerminalInteractiveShell object>,), **kwargs={})
    547         ....:     if work:
    548         ....:         return 'foo worked'
    549         ....:     raise RuntimeError("foo didn't work")
    550         sage: foo(False)
    551         Traceback (most recent call last):
    552         ...
    553         RuntimeError: foo didn't work
    554         sage: foo(True)
    555         'foo worked'
    556         sage: foo(False)
    557         sage: foo(True)
    558     """
    559     @wraps(func)
    560     def wrapper(*args, **kwargs):
    561         if not wrapper.has_run:
--> 562             result = func(*args, **kwargs)
        result = undefined
        global func = undefined
        args = (<sage.repl.interpreter.SageTerminalInteractiveShell object at 0x7ff54c001d50>,)
        kwargs = {}
    563             wrapper.has_run = True
    564             return result
    565     wrapper.has_run = False
    566     return wrapper
    567 
    568 
    569 @run_once
    570 def load_ipython_extension(ip):
    571     """
    572     Load the extension in IPython.
    573     """
    574     # this modifies ip
    575     SageCustomizations(shell=ip)

/usr/lib/python2.7/dist-packages/sage/repl/ipython_extension.pyc in load_ipython_extension(ip=<sage.repl.interpreter.SageTerminalInteractiveShell object>)
    560     def wrapper(*args, **kwargs):
    561         if not wrapper.has_run:
    562             result = func(*args, **kwargs)
    563             wrapper.has_run = True
    564             return result
    565     wrapper.has_run = False
    566     return wrapper
    567 
    568 
    569 @run_once
    570 def load_ipython_extension(ip):
    571     """
    572     Load the extension in IPython.
    573     """
    574     # this modifies ip
--> 575     SageCustomizations(shell=ip)
        global SageCustomizations = <class 'sage.repl.ipython_extension.SageCustomizations'>
        global shell = undefined
        ip = <sage.repl.interpreter.SageTerminalInteractiveShell object at 0x7ff54c001d50>

/usr/lib/python2.7/dist-packages/sage/repl/ipython_extension.pyc in __init__(self=<sage.repl.ipython_extension.SageCustomizations object>, shell=<sage.repl.interpreter.SageTerminalInteractiveShell object>)
    418     def __init__(self, shell=None):
    419         """
    420         Initialize the Sage plugin.
    421         """
    422         self.shell = shell
    423 
    424         self.auto_magics = SageMagics(shell)
    425         self.shell.register_magics(self.auto_magics)
    426 
    427         import sage.misc.edit_module as edit_module
    428         self.shell.set_hook('editor', edit_module.edit_devel)
    429 
    430         self.init_inspector()
    431         self.init_line_transforms()
    432 
--> 433         import sage.all # until sage's import hell is fixed
        sage.all = undefined
    434 
    435         self.shell.verbose_quit = True
    436         self.set_quit_hook()
    437 
    438         self.register_interface_magics()
    439 
    440         if SAGE_IMPORTALL == 'yes':
    441             self.init_environment()
    442 
    443     def register_interface_magics(self):
    444         """
    445         Register magics for each of the Sage interfaces
    446         """
    447         from sage.repl.interface_magic import InterfaceMagic
    448         InterfaceMagic.register_all(self.shell)

/usr/lib/python2.7/dist-packages/sage/all.py in <module>()
     87 from sage.misc.sh import sh
     88 
     89 from sage.libs.all       import *
     90 from sage.data_structures.all import *
     91 from sage.doctest.all    import *
     92 
     93 from sage.structure.all  import *
     94 from sage.rings.all      import *
     95 from sage.arith.all      import *
     96 from sage.matrix.all     import *
     97 
     98 from sage.symbolic.all   import *
     99 from sage.modules.all    import *
    100 from sage.monoids.all    import *
    101 from sage.algebras.all   import *
--> 102 from sage.modular.all    import *
        global sage.modular.all = undefined
    103 from sage.sat.all        import *
    104 from sage.schemes.all    import *
    105 from sage.graphs.all     import *
    106 from sage.groups.all     import *
    107 from sage.arith.power    import generic_power as power
    108 from sage.databases.all  import *
    109 from sage.categories.all import *
    110 from sage.sets.all       import *
    111 from sage.probability.all import *
    112 from sage.interfaces.all import *
    113 
    114 from sage.functions.all  import *
    115 from sage.calculus.all   import *
    116 
    117 import sage.tests.all as tests

/usr/lib/python2.7/dist-packages/sage/modular/all.py in <module>()
      1 from __future__ import absolute_import
      2 from sage.misc.lazy_import import lazy_import
      3 
----> 4 from .quatalg.all import *
        global quatalg.all = undefined
      5 
      6 from .modsym.all import *
      7 
      8 from .modform.all import *
      9 
     10 from .ssmod.all import *
     11 
     12 from .abvar.all import *
     13 
     14 from .dirichlet import (DirichletGroup,
     15                        kronecker_character, kronecker_character_upside_down,
     16                        trivial_character)
     17 
     18 from .arithgroup.all import (Gamma0, Gamma1, GammaH, Gamma, SL2Z,
     19                             ArithmeticSubgroup_Permutation,
     20                             CongruenceSubgroup, FareySymbol)
     21 
     22 from .cusps import Cusp, Cusps
     23 
     24 from .dims import (dimension_cusp_forms,
     25                   dimension_new_cusp_forms,
     26                   dimension_eis,
     27                   dimension_modular_forms,
     28                   sturm_bound)
     29 
     30 from .buzzard import buzzard_tpslopes
     31 

/usr/lib/python2.7/dist-packages/sage/modular/quatalg/__init__.py in <module>()
      1 from __future__ import absolute_import
      2 # Modular forms using quaternion algebras -- initialization file
      3 
----> 4 from . import all
        global all = undefined

/usr/lib/python2.7/dist-packages/sage/modular/quatalg/all.py in <module>()
      1 from __future__ import absolute_import
      2 
----> 3 from .brandt import BrandtModule
        global brandt = undefined
        global BrandtModule = undefined

/usr/lib/python2.7/dist-packages/sage/modular/quatalg/brandt.py in <module>()
    191 # it under the terms of the GNU General Public License as published by
    192 # the Free Software Foundation, either version 2 of the License, or
    193 # (at your option) any later version.
    194 #                  http://www.gnu.org/licenses/
    195 #*****************************************************************************
    196 from __future__ import print_function
    197 
    198 # imports
    199 from sage.misc.all import prod, verbose
    200 from sage.rings.all import Integer, ZZ, QQ, PolynomialRing, GF, CommutativeRing
    201 
    202 from sage.algebras.quatalg.quaternion_algebra import QuaternionAlgebra, basis_for_quaternion_lattice
    203 from sage.algebras.quatalg.quaternion_algebra_cython import rational_matrix_from_rational_quaternions
    204 
    205 from sage.arith.all import gcd, factor, prime_divisors, kronecker, next_prime
--> 206 from sage.modular.hecke.all import (AmbientHeckeModule, HeckeSubmodule, HeckeModuleElement)
        global sage.modular.hecke.all = undefined
        global AmbientHeckeModule = undefined
        global HeckeSubmodule = undefined
        global HeckeModuleElement = undefined
    207 from sage.modular.dirichlet import TrivialCharacter
    208 from sage.matrix.all  import MatrixSpace, matrix
    209 from sage.misc.mrange import cartesian_product_iterator
    210 from sage.structure.richcmp import richcmp, richcmp_method
    211 from sage.misc.cachefunc import cached_method
    212 
    213 from copy import copy
    214 
    215 cache = {}
    216 
    217 def BrandtModule(N, M=1, weight=2, base_ring=QQ, use_cache=True):
    218     """
    219     Return the Brandt module of given weight associated to the prime
    220     power `p^r` and integer `M`, where `p` and `M` are coprime.
    221 

/usr/lib/python2.7/dist-packages/sage/modular/hecke/all.py in <module>()
      5 
      6 from .hecke_operator import HeckeOperator, is_HeckeOperator
      7 
      8 from .degenmap import DegeneracyMap
      9 
     10 from .algebra import HeckeAlgebra, is_HeckeAlgebra
     11 
     12 from .morphism import (HeckeModuleMorphism, HeckeModuleMorphism_matrix,
     13                        is_HeckeModuleMorphism,
     14                        is_HeckeModuleMorphism_matrix)
     15 
     16 from .element import HeckeModuleElement, is_HeckeModuleElement
     17 
     18 from .submodule import HeckeSubmodule, is_HeckeSubmodule
     19 
---> 20 from .ambient_module import AmbientHeckeModule, is_AmbientHeckeModule
        global ambient_module = undefined
        global AmbientHeckeModule = undefined
        global is_AmbientHeckeModule = undefined

/usr/lib/python2.7/dist-packages/sage/modular/hecke/ambient_module.py in <module>()
     23 from . import degenmap
     24 from . import module
     25 from . import submodule
     26 
     27 import sage.modules.all
     28 
     29 import sage.rings.all
     30 
     31 import sage.misc.misc as misc
     32 
     33 import sage.arith.all as arith
     34 
     35 import sage.matrix.matrix_space as matrix_space
     36 from   sage.matrix.constructor import matrix
     37 
---> 38 from sage.modular.arithgroup.all import Gamma0 # for Sturm bound
        global sage.modular.arithgroup.all = undefined
        global Gamma0 = undefined
     39 
     40 def is_AmbientHeckeModule(x):
     41     r"""
     42     Return True if x is of type AmbientHeckeModule.
     43 
     44     EXAMPLES::
     45 
     46         sage: from sage.modular.hecke.ambient_module import is_AmbientHeckeModule
     47         sage: is_AmbientHeckeModule(ModularSymbols(6))
     48         True
     49         sage: is_AmbientHeckeModule(ModularSymbols(6).cuspidal_subspace())
     50         False
     51         sage: is_AmbientHeckeModule(ModularForms(11))
     52         True
     53         sage: is_AmbientHeckeModule(BrandtModule(2, 3))

/usr/lib/python2.7/dist-packages/sage/modular/arithgroup/__init__.py in <module>()
      1 from __future__ import absolute_import
      2 # do nothing
      3 
----> 4 from . import all
        global all = undefined

/usr/lib/python2.7/dist-packages/sage/modular/arithgroup/all.py in <module>()
      1 from __future__ import absolute_import
      2 # Note: the is_xxx functions are imported to here, but not from here up to sage.modular.all, so
      3 # they are invisible to the user but easy to import all in one go by other code that needs them.
      4 
      5 from .arithgroup_generic import is_ArithmeticSubgroup
----> 6 from .congroup_generic import is_CongruenceSubgroup, CongruenceSubgroup_constructor as CongruenceSubgroup
        global congroup_generic = undefined
        global is_CongruenceSubgroup = undefined
        global CongruenceSubgroup_constructor = undefined
        global CongruenceSubgroup = undefined
      7 from .congroup_gammaH import GammaH_constructor as GammaH, is_GammaH
      8 from .congroup_gamma1 import Gamma1_constructor as Gamma1, is_Gamma1
      9 from .congroup_gamma0 import Gamma0_constructor as Gamma0, is_Gamma0
     10 from .congroup_gamma import Gamma_constructor as Gamma, is_Gamma
     11 from .congroup_sl2z import SL2Z, is_SL2Z
     12 
     13 from .arithgroup_perm import ArithmeticSubgroup_Permutation
     14 
     15 from .congroup import (degeneracy_coset_representatives_gamma0,
     16                             degeneracy_coset_representatives_gamma1)
     17 
     18 from .farey_symbol import Farey as FareySymbol
     19 

/usr/lib/python2.7/dist-packages/sage/modular/arithgroup/congroup_generic.py in <module>()
     13 #
     14 #       Copyright (C) 2004, 2006 William Stein <wstein at gmail.com>
     15 #
     16 #  Distributed under the terms of the GNU General Public License (GPL)
     17 #
     18 #  The full text of the GPL is available at:
     19 #
     20 #                  http://www.gnu.org/licenses/
     21 #
     22 ################################################################################
     23 from __future__ import absolute_import
     24 
     25 from sage.rings.all import QQ, ZZ, Zmod
     26 from sage.arith.all import gcd
     27 from sage.sets.set import Set
---> 28 from sage.groups.matrix_gps.all import MatrixGroup
        global sage.groups.matrix_gps.all = undefined
        global MatrixGroup = undefined
     29 from sage.matrix.matrix_space import MatrixSpace
     30 from sage.misc.misc_c import prod
     31 from .arithgroup_generic import ArithmeticSubgroup
     32 
     33 
     34 def CongruenceSubgroup_constructor(*args):
     35     r"""
     36     Attempt to create a congruence subgroup from the given data.
     37 
     38     The allowed inputs are as follows:
     39 
     40     - A :class:`~sage.groups.matrix_gps.matrix_group.MatrixGroup` object. This
     41       must be a group of matrices over `\ZZ / N\ZZ` for some `N`, with
     42       determinant 1, in which case the function will return the group of
     43       matrices in `SL(2, \ZZ)` whose reduction mod `N` is in the given group.

/usr/lib/python2.7/dist-packages/sage/groups/matrix_gps/all.py in <module>()
      1 from sage.misc.lazy_import import lazy_import
      2 
      3 lazy_import('sage.groups.matrix_gps.linear', 'GL')
      4 lazy_import('sage.groups.matrix_gps.linear', 'SL')
      5 lazy_import('sage.groups.matrix_gps.symplectic', 'Sp')
      6 lazy_import('sage.groups.matrix_gps.unitary', 'SU')
      7 lazy_import('sage.groups.matrix_gps.unitary', 'GU')
      8 lazy_import('sage.groups.matrix_gps.orthogonal', 'GO')
      9 lazy_import('sage.groups.matrix_gps.orthogonal', 'SO')
     10 lazy_import('sage.groups.matrix_gps.finitely_generated', 'MatrixGroup')
     11 lazy_import('sage.groups.matrix_gps.finitely_generated', 'QuaternionMatrixGroupGF3')
     12 
---> 13 import sage.groups.matrix_gps.pickling_overrides
        global sage.groups.matrix_gps.pickling_overrides = undefined

/usr/lib/python2.7/dist-packages/sage/groups/matrix_gps/pickling_overrides.py in <module>()
      1 """
      2 Overrides to unpickle old matrix groups
      3 """
      4 
      5 from sage.structure.sage_object import SageObject, register_unpickle_override
      6 
----> 7 from sage.groups.matrix_gps.finitely_generated import FinitelyGeneratedMatrixGroup_gap
        global sage.groups.matrix_gps.finitely_generated = undefined
        global FinitelyGeneratedMatrixGroup_gap = undefined
      8 from sage.groups.matrix_gps.group_element import MatrixGroupElement_gap
      9 from sage.groups.matrix_gps.linear import GL, LinearMatrixGroup_generic
     10 
     11 
     12 
     13 class LegacyMatrixGroup(FinitelyGeneratedMatrixGroup_gap):
     14 
     15     def __setstate__(self, state):
     16         """
     17         Restore from old pickle.
     18 
     19         EXAMPLES::
     20 
     21             sage: from sage.groups.matrix_gps.pickling_overrides import LegacyMatrixGroup
     22             sage: state = dict()
     23             sage: state['_MatrixGroup_gap__n'] = 2
     24             sage: state['_MatrixGroup_gap__R'] = GF(3)
     25             sage: state['_gensG'] = [ matrix(GF(3), [[1,2],[0,1]]) ]
     26             sage: M = LegacyMatrixGroup.__new__(LegacyMatrixGroup)
     27             sage: M.__setstate__(state)
     28             sage: M
     29             Matrix group over Finite Field of size 3 with 1 generators (
     30             [1 2]
     31             [0 1]

/usr/lib/python2.7/dist-packages/sage/groups/matrix_gps/finitely_generated.py in <module>()
     66 from sage.rings.all import QQbar
     67 from sage.interfaces.gap import gap
     68 from sage.structure.element import is_Matrix
     69 from sage.matrix.matrix_space import MatrixSpace, is_MatrixSpace
     70 from sage.matrix.all import matrix
     71 from sage.structure.sequence import Sequence
     72 from sage.misc.cachefunc import cached_method
     73 from sage.modules.free_module_element import vector
     74 from sage.rings.polynomial.polynomial_ring_constructor import PolynomialRing
     75 from sage.rings.power_series_ring import PowerSeriesRing
     76 from sage.rings.fraction_field import FractionField
     77 from sage.misc.functional import cyclotomic_polynomial
     78 from sage.rings.number_field.number_field import CyclotomicField
     79 from sage.combinat.integer_vector import IntegerVectors
     80 
---> 81 from sage.groups.matrix_gps.matrix_group import (
        global sage.groups.matrix_gps.matrix_group = undefined
        global MatrixGroup_generic = undefined
        global MatrixGroup_gap = undefined
     82     MatrixGroup_generic, MatrixGroup_gap )
     83 from sage.groups.matrix_gps.group_element import is_MatrixGroupElement
     84 
     85 
     86 def normalize_square_matrices(matrices):
     87     """
     88     Find a common space for all matrices.
     89 
     90     OUTPUT:
     91 
     92     A list of matrices, all elements of the same matrix space.
     93 
     94     EXAMPLES::
     95 
     96         sage: from sage.groups.matrix_gps.finitely_generated import normalize_square_matrices

/usr/lib/python2.7/dist-packages/sage/groups/matrix_gps/matrix_group.py in <module>()
     46 # (at your option) any later version.
     47 #                  https://www.gnu.org/licenses/
     48 # ****************************************************************************
     49 
     50 from __future__ import absolute_import
     51 
     52 from sage.rings.integer import is_Integer
     53 from sage.rings.ring import is_Ring
     54 from sage.rings.finite_rings.finite_field_constructor import is_FiniteField
     55 from sage.matrix.matrix_space import MatrixSpace
     56 from sage.misc.latex import latex
     57 from sage.structure.richcmp import (richcmp_not_equal, rich_to_bool,
     58                                     richcmp_method, richcmp)
     59 from sage.misc.cachefunc import cached_method
     60 from sage.groups.group import Group
---> 61 from sage.groups.libgap_wrapper import ParentLibGAP
        global sage.groups.libgap_wrapper = undefined
        global ParentLibGAP = undefined
     62 from sage.groups.libgap_mixin import GroupMixinLibGAP
     63 
     64 from sage.groups.matrix_gps.group_element import (
     65     MatrixGroupElement_generic, MatrixGroupElement_gap)
     66 
     67 #################################################################
     68 
     69 def is_MatrixGroup(x):
     70     """
     71     Test whether ``x`` is a matrix group.
     72 
     73     EXAMPLES::
     74 
     75         sage: from sage.groups.matrix_gps.matrix_group import is_MatrixGroup
     76         sage: is_MatrixGroup(MatrixSpace(QQ,3))

/usr/lib/python2.7/dist-packages/sage/libs/gap/element.pxd in init sage.groups.libgap_wrapper (build/cythonized/sage/groups/libgap_wrapper.c:9846)()
     17 cdef Obj make_gap_integer(sage_dict) except NULL
     18 cdef Obj make_gap_string(sage_string) except NULL
     19 
     20 cdef GapElement make_any_gap_element(parent, Obj obj)
     21 cdef GapElement make_GapElement(parent, Obj obj)
     22 cdef GapElement_List make_GapElement_List(parent, Obj obj)
     23 cdef GapElement_Record make_GapElement_Record(parent, Obj obj)
     24 cdef GapElement_Integer make_GapElement_Integer(parent, Obj obj)
     25 cdef GapElement_Rational make_GapElement_Rational(parent, Obj obj)
     26 cdef GapElement_String make_GapElement_String(parent, Obj obj)
     27 cdef GapElement_Boolean make_GapElement_Boolean(parent, Obj obj)
     28 cdef GapElement_Function make_GapElement_Function(parent, Obj obj)
     29 cdef char *crepr(Obj)
     30 
     31 
---> 32 cdef class GapElement(RingElement):
        global cdef = undefined
        global GapElement = undefined
        global RingElement = undefined
     33 
     34     # the pointer to the GAP object (memory managed by GASMAN)
     35     cdef Obj value
     36 
     37     # comparison
     38     cdef bint _compare_by_id
     39     cdef bint _compare_equal(self, Element other) except -2
     40     cdef bint _compare_less(self, Element other) except -2
     41     cpdef _set_compare_by_id(self)
     42     cpdef _assert_compare_by_id(self)
     43 
     44     cdef _initialize(self, parent, Obj obj)
     45     cpdef _type_number(self)
     46     cpdef is_bool(self)
     47     cpdef _add_(self, other)

ImportError: /usr/lib/python2.7/dist-packages/sage/libs/gap/element.x86_64-linux-gnu.so: undefined symbol: _GAP_SetEnterStackCount

***************************************************************************

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