On Sat, Oct 19, 2019 at 12:07 AM Sinan Kapçak <sinankap...@gmail.com> wrote:
>
> on Linux Ubuntu 19.10 -
> Sage installed by binaries downloaded by a torrent.
> Downloaded and extracted and ./sage.
it would be surprising if a binary for an earlier Ubuntu version
worked on 19.10.
You might need to build Sage from source...
>
>
>
>
> ***************************************************************************
>
> IPython post-mortem report
>
> {'commit_hash': u'033ab93c7',
> 'commit_source': 'installation',
> 'default_encoding': 'UTF-8',
> 'ipython_path':
> '/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/IPython',
> 'ipython_version': '5.8.0',
> 'os_name': 'posix',
> 'platform': 'Linux-5.3.0-18-generic-x86_64-with-debian-buster-sid',
> 'sys_executable':
> '/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/bin/python2',
> 'sys_platform': 'linux2',
> 'sys_version': '2.7.15 (default, Oct 4 2019, 05:22:55) \n[GCC 7.4.0]'}
>
> ***************************************************************************
>
>
>
> ***************************************************************************
>
> Crash traceback:
>
> ---------------------------------------------------------------------------
> ---------------------------------------------------------------------------
> ImportErrorPython 2.7.15:
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/bin/python2
> Sat Oct 19 01:57:57 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.
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/src/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 0x7f1a30ef3c50>>
> 16 app.start()
>
> </home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/decorator.py:decorator-gen-110>
> in initialize(self=<sage.repl.interpreter.SageTerminalApp object>, argv=None)
>
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/traitlets/config/application.py
> 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 0x7f1a2d892c80>
> app = <sage.repl.interpreter.SageTerminalApp object at 0x7f1a30ef3c50>
> 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
>
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/IPython/terminal/ipapp.py
> 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 0x7f1a30ef3c50>>
> 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,
>
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/repl/interpreter.py
> in init_shell(self=<sage.repl.interpreter.SageTerminalApp object>)
> 772 self.shell.has_sage_extensions = SAGE_EXTENSION in
> self.extensions
> 773
> 774 # Load the %lprun extension if available
> 775 try:
> 776 import line_profiler
> 777 except ImportError:
> 778 pass
> 779 else:
> 780 self.extensions.append('line_profiler')
> 781
> 782 if self.shell.has_sage_extensions:
> 783 self.extensions.remove(SAGE_EXTENSION)
> 784
> 785 # load sage extension here to get a crash if
> 786 # something is wrong with the sage library
> --> 787
> 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 0x7f1a2b74b550>>
> global SAGE_EXTENSION = 'sage'
> 788
> 789
>
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/IPython/core/extensions.py
> 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 0x7f1a2b74b550>>
> mod = <module 'sage' from
> '/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/__init__.py'>
> 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:
>
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/IPython/core/extensions.py
> in
> _call_load_ipython_extension(self=<IPython.core.extensions.ExtensionManager
> object>, mod=<module 'sage' from
> '/home/kapcak/Documents/Sage...al/lib/python2.7/site-packages/sage/__init__.py'>)
> 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
> 0x7f1a31989c08>
> self.shell = <sage.repl.interpreter.SageTerminalInteractiveShell
> object at 0x7f1a2d893e10>
> 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.
>
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/__init__.py
> 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 0x7f1a2f478050>
> args = (<sage.repl.interpreter.SageTerminalInteractiveShell object at
> 0x7f1a2d893e10>,)
> 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)
>
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/repl/ipython_extension.py
> 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
> 0x7f1a2d893e10>,)
> 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)
>
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/repl/ipython_extension.py
> 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
> 0x7f1a2d893e10>
>
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/repl/ipython_extension.py
> 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)
>
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/all.py
> in <module>()
> 82
> 83 import sage.misc.lazy_import
> 84 from sage.misc.all import * # takes a while
> 85 from sage.typeset.all import *
> 86 from sage.repl.all import *
> 87
> 88 from sage.misc.sh import sh
> 89
> 90 from sage.libs.all import *
> 91 from sage.data_structures.all import *
> 92 from sage.doctest.all import *
> 93
> 94 from sage.structure.all import *
> 95 from sage.rings.all import *
> 96 from sage.arith.all import *
> ---> 97 from sage.matrix.all import *
> global sage.matrix.all = undefined
> 98
> 99 from sage.symbolic.all import *
> 100 from sage.modules.all import *
> 101 from sage.monoids.all import *
> 102 from sage.algebras.all import *
> 103 from sage.modular.all import *
> 104 from sage.sat.all import *
> 105 from sage.schemes.all import *
> 106 from sage.graphs.all import *
> 107 from sage.groups.all import *
> 108 from sage.arith.power import generic_power as power
> 109 from sage.databases.all import *
> 110 from sage.categories.all import *
> 111 from sage.sets.all import *
> 112 from sage.probability.all import *
>
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/matrix/__init__.py
> in <module>()
> 1 # Resolve a cyclic import
> ----> 2 import sage.matrix.args
> global sage.matrix.args = undefined
>
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/matrix/args.pyx
> in init sage.matrix.args (build/cythonized/sage/matrix/args.c:21226)()
> 10 # This program is free software: you can redistribute it and/or modify
> 11 # it under the terms of the GNU General Public License as published by
> 12 # the Free Software Foundation, either version 2 of the License, or
> 13 # (at your option) any later version.
> 14 # http://www.gnu.org/licenses/
> 15
> #*****************************************************************************
> 16
> 17 from __future__ import absolute_import, generator_stop
> 18
> 19 cimport cython
> 20 from cpython.sequence cimport PySequence_Fast
> 21 from cysignals.signals cimport sig_check
> 22 from cypari2.gen cimport Gen
> 23 from cypari2.types cimport typ, t_MAT, t_VEC, t_COL, t_VECSMALL,
> t_LIST, t_STR, t_CLOSURE
> 24
> ---> 25 from .matrix_space import MatrixSpace
> global matrix_space = undefined
> global MatrixSpace = undefined
> 26 from sage.rings.all import ZZ, RDF, CDF
> 27 from sage.structure.coerce cimport (coercion_model,
> 28 is_numpy_type, py_scalar_parent)
> 29 from sage.structure.element cimport Element, RingElement, Vector
> 30 from sage.arith.long cimport pyobject_to_long
> 31 from sage.misc.misc_c import sized_iter
> 32 from sage.categories import monoids
> 33
> 34
> 35 CommutativeMonoids = monoids.Monoids().Commutative()
> 36
> 37
> 38 cdef inline bint element_is_scalar(Element x):
> 39 """
> 40 Should this element be considered a scalar (as opposed to a
> vector)?
>
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/matrix/matrix_space.py
> in <module>()
> 31 # (at your option) any later version.
> 32 # https://www.gnu.org/licenses/
> 33 #
> ****************************************************************************
> 34 from __future__ import print_function, absolute_import
> 35 from six.moves import range
> 36 from six import iteritems, integer_types
> 37
> 38 # System imports
> 39 import sys
> 40 import operator
> 41
> 42 # Sage matrix imports
> 43 from . import matrix_generic_dense
> 44 from . import matrix_generic_sparse
> 45
> ---> 46 from . import matrix_modn_sparse
> global matrix_modn_sparse = undefined
> 47
> 48 from . import matrix_mod2_dense
> 49 from . import matrix_gf2e_dense
> 50
> 51 from . import matrix_integer_dense
> 52 from . import matrix_integer_sparse
> 53
> 54 from . import matrix_rational_dense
> 55 from . import matrix_rational_sparse
> 56
> 57 from . import matrix_polynomial_dense
> 58 from . import matrix_mpolynomial_dense
> 59
> 60 # Sage imports
> 61 from sage.misc.superseded import deprecation
>
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/matrix/matrix_integer_sparse.pxd
> in init sage.matrix.matrix_modn_sparse
> (build/cythonized/sage/matrix/matrix_modn_sparse.cpp:16317)()
> 1 from sage.modules.vector_integer_sparse cimport mpz_vector
> 2 from sage.ext.mod_int cimport mod_int
> 3 from .matrix_sparse cimport Matrix_sparse
> 4
> ----> 5 cdef class Matrix_integer_sparse(Matrix_sparse):
> global cdef = undefined
> global Matrix_integer_sparse = undefined
> global Matrix_sparse = undefined
> 6 cdef mpz_vector* _matrix
> 7
> 8 cdef _mod_int_c(self, mod_int p)
>
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/matrix/matrix_integer_dense.pxd
> in init sage.matrix.matrix_integer_sparse
> (build/cythonized/sage/matrix/matrix_integer_sparse.cpp:15958)()
> 1 from sage.libs.gmp.types cimport *
> 2 from sage.libs.flint.types cimport fmpz_mat_t
> 3
> 4 from .matrix_dense cimport Matrix_dense
> 5 from sage.rings.integer cimport Integer
> 6 from sage.ext.mod_int cimport *
> 7
> 8 ctypedef long* GEN
> 9
> ---> 10 cdef class Matrix_integer_dense(Matrix_dense):
> global cdef = undefined
> global Matrix_integer_dense = undefined
> global Matrix_dense = undefined
> 11 cdef fmpz_mat_t _matrix
> 12 cdef object _pivots
> 13 cdef int mpz_height(self, mpz_t height) except -1
> 14 cdef _mod_int_c(self, mod_int modulus)
> 15 cdef _mod_two(self)
> 16 cdef _pickle_version0(self)
> 17 cdef _unpickle_version0(self, data)
> 18 cpdef _export_as_string(self, int base=?)
> 19 cdef void set_unsafe_mpz(self, Py_ssize_t i, Py_ssize_t j, const
> mpz_t value)
> 20 cdef void set_unsafe_si(self, Py_ssize_t i, Py_ssize_t j, long
> value)
> 21 cdef void set_unsafe_double(self, Py_ssize_t i, Py_ssize_t j,
> double value)
> 22 cdef inline void get_unsafe_mpz(self, Py_ssize_t i, Py_ssize_t j,
> mpz_t value)
> 23 cdef inline double get_unsafe_double(self, Py_ssize_t i,
> Py_ssize_t j)
> 24
> 25 # HNF Modn
> 26 cdef int _hnf_modn(Matrix_integer_dense self,
> Matrix_integer_dense res,
> 27 unsigned int det) except -1
> 28 cdef int* _hnf_modn_impl(Matrix_integer_dense self, unsigned int
> det,
> 29 Py_ssize_t nrows, Py_ssize_t ncols) except NULL
> 30
> 31 cdef Matrix_integer_dense _new(self, Py_ssize_t nrows, Py_ssize_t
> ncols)
>
> /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/matrix/matrix_mod2_dense.pxd
> in init sage.matrix.matrix_integer_dense
> (build/cythonized/sage/matrix/matrix_integer_dense.c:55466)()
> 1 from .matrix_dense cimport Matrix_dense
> 2 from sage.libs.m4ri cimport *
> 3
> ----> 4 cdef class Matrix_mod2_dense(Matrix_dense):
> global cdef = undefined
> global Matrix_mod2_dense = undefined
> global Matrix_dense = undefined
> 5 cdef mzd_t *_entries
> 6 cdef object _one
> 7 cdef object _zero
> 8
> 9 cdef set_unsafe_int(self, Py_ssize_t i, Py_ssize_t j, int value)
> 10
> 11 cpdef Matrix_mod2_dense _multiply_m4rm(Matrix_mod2_dense self,
> Matrix_mod2_dense right, int k)
> 12 cpdef Matrix_mod2_dense _multiply_strassen(Matrix_mod2_dense
> self, Matrix_mod2_dense right, int cutoff)
> 13
> 14 # For conversion to other systems
> 15 cpdef _export_as_string(self)
>
> ImportError: libpng12.so.0: cannot open shared object file: No such file or
> directory
>
> ***************************************************************************
>
> History of session input:
> *** Last line of input (may not be in above history):
>
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