Hi Harald,

I really need to change all these variables:

  • LD_LIBRARY_PATH otherwise we don't find libvcsn
  • PYTHONHOME otherwise this python3 will use python2 files, and die on the syntax
  • PYTHONPATH to find vcsn's Python file
In [1]:
import sys
sys.path.append('/usr/local/lib/python3.4/site-packages')
import os
#os.environ['LD_LIBRARY_PATH'] = '/usr/local/lib'
# os.environ['VCSN_VERBOSE'] = '1'
# os.environ['VCSN_PYTHON'] = 'python3'
# os.environ['PYTHONPATH'] = '/usr/local/lib/python3.4/site-packages'
# del os.environ['PYTHONHOME']
import vcsn
In [2]:
dict(os.environ)
Out[2]:
{'AR': 'ar',
 'AS': 'as',
 'CC': 'gcc',
 'CCACHE_BASEDIR': '/projects/sage/sage-7.5',
 'CHMOD': 'chmod',
 'CLICOLOR': '1',
 'CP': 'cp',
 'CPATH': '/projects/sage/sage-7.5/local/include:/usr/include/x86_64-linux-gnu',
 'CXX': 'g++',
 'CYSIGNALS_CRASH_DAYS': '7',
 'CYSIGNALS_CRASH_LOGS': '/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.sage//crash_logs',
 'DOT_SAGE': '/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.sage/',
 'ECLDIR': '/projects/sage/sage-7.5/local/lib/ecl/',
 'F77': 'gfortran',
 'F90': 'gfortran',
 'F95': 'gfortran',
 'FC': 'gfortran',
 'GIT_PAGER': 'cat',
 'GPDOCDIR': '/projects/sage/sage-7.5/local/share/pari/doc',
 'GPHELP': '/projects/sage/sage-7.5/local/bin/gphelp',
 'GP_DATA_DIR': '/projects/sage/sage-7.5/local/share/pari',
 'HOME': '/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c',
 'IPYTHONDIR': '/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.sage//ipython-5.0.0',
 'ISOCHRONES': '/projects/data/isochrones',
 'JPY_PARENT_PID': '6673',
 'JULIA_PKGDIR': '/usr/local/share/julia/site',
 'JUPYTER_CONFIG_DIR': '/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.sage//jupyter-4.1',
 'LANG': 'en_US.UTF-8',
 'LD': 'ld',
 'LDFLAGS': '-L/projects/sage/sage-7.5/local/lib -Wl,-rpath,/projects/sage/sage-7.5/local/lib ',
 'LD_LIBRARY_PATH': '/usr/lib:/usr/local/lib',
 'LIBRARY_PATH': '/projects/sage/sage-7.5/local/lib:/usr/lib/x86_64-linux-gnu',
 'LN': 'ln',
 'LOGNAME': 'e56b574d17c044e78cc179643e0a4c2c',
 'MAIL': '/var/mail/e56b574d17c044e78cc179643e0a4c2c',
 'MAKE': 'make',
 'MAXIMA_PREFIX': '/projects/sage/sage-7.5/local',
 'MKDIR': 'mkdir',
 'MPLBACKEND': 'module://ipykernel.pylab.backend_inline',
 'MPLCONFIGDIR': '/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.sage//matplotlib-1.5.1',
 'MV': 'mv',
 'NLTK_DATA': '/projects/data/nltk_data',
 'PAGER': 'cat',
 'PATH': '/projects/sage/sage-7.5/build/bin:/projects/sage/sage-7.5/src/bin:/projects/sage/sage-7.5/local/bin:/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin',
 'PERL5LIB': '/projects/sage/sage-7.5/local/lib/perl5:',
 'PIP_INSTALL': 'sage-pip-install',
 'PWD': '/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c',
 'PYTHONPATH': '/usr/lib/python3.4:/usr/lib/python3.4/plat-x86_64-linux-gnu:/usr/lib/python3.4/lib-dynload:/usr/local/lib/python3.4/dist-packages:/usr/lib/python3/dist-packages:/usr/local/lib/python3.4/site-packages',
 'PYTHON_EGG_CACHE': '/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.sage//.python-eggs',
 'RANLIB': 'ranlib',
 'R_MAKEVARS_SITE': '/projects/sage/sage-7.5/local/lib/R/share/Makevars.site',
 'R_MAKEVARS_USER': '/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.sage//R/Makevars.user',
 'SAGE64': 'no',
 'SAGE_DATA': '/projects/sage/sage-7.5/local/share',
 'SAGE_DISTFILES': '/projects/sage/sage-7.5/upstream',
 'SAGE_DOC': '/projects/sage/sage-7.5/local/share/doc/sage',
 'SAGE_DOC_MATHJAX': 'True',
 'SAGE_DOC_SRC': '/projects/sage/sage-7.5/src/doc',
 'SAGE_ENV_SOURCED': '4',
 'SAGE_ETC': '/projects/sage/sage-7.5/local/etc',
 'SAGE_EXTCODE': '/projects/sage/sage-7.5/local/share/sage/ext',
 'SAGE_LOCAL': '/projects/sage/sage-7.5/local',
 'SAGE_LOGS': '/projects/sage/sage-7.5/logs/pkgs',
 'SAGE_NUM_THREADS': '1',
 'SAGE_NUM_THREADS_PARALLEL': '8',
 'SAGE_ORIG_PATH': '/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin',
 'SAGE_ORIG_PATH_SET': 'True',
 'SAGE_REPO_ANONYMOUS': 'git://trac.sagemath.org/sage.git',
 'SAGE_REPO_AUTHENTICATED': 'ssh://[email protected]:2222/sage.git',
 'SAGE_ROOT': '/projects/sage/sage-7.5',
 'SAGE_SCRIPTS_DIR': '/projects/sage/sage-7.5/src/bin',
 'SAGE_SHARE': '/projects/sage/sage-7.5/local/share',
 'SAGE_SPKG_INST': '/projects/sage/sage-7.5/local/var/lib/sage/installed',
 'SAGE_SRC': '/projects/sage/sage-7.5/src',
 'SAGE_STARTUP_FILE': '/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.sage//init.sage',
 'SHELL': '/bin/bash',
 'SHLVL': '0',
 'SINGULARPATH': '/projects/sage/sage-7.5/local/share/singular',
 'SINGULAR_EXECUTABLE': '/projects/sage/sage-7.5/local/bin/Singular',
 'SMC': '/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.smc',
 'SMC_BASE_URL': '',
 'TERM': 'xterm-color',
 'TERMINFO': '/projects/sage/sage-7.5/local/share/terminfo',
 'TOUCH': 'touch',
 'UNAME': 'Linux',
 'USER': 'e56b574d17c044e78cc179643e0a4c2c',
 'USERNAME': 'e56b574d17c044e78cc179643e0a4c2c',
 '_JAVA_OPTIONS': '-Xms64m',
 '__sage__': ''}
In [2]:
vcsn.B
Out[2]:
$\{\ldots\}\to\mathbb{B}$
In [3]:
vcsn.B.expression('a')
Out[3]:
$a$
In [4]:
a = vcsn.B.expression('a+a*').automaton()
a
Out[4]:
%3 I0 0 0 I0->0 F0 F1 F2 0->F0 1 1 0->1 a 2 2 0->2 a 1->F1 2->F2 2->2 a
In [5]:
a.determinize()
Out[5]:
%3 I0 0 0 I0->0 F0 F1 F2 0->F0 1 1, 2 0->1 a 1->F1 2 2 1->2 a 2->F2 2->2 a
In [6]:
vcsn.context('lal, f2').expression('a+a*').automaton().determinize()
Out[6]:
%3 I0 0 0 I0->0 F0 F2 0->F0 1 1, 2 0->1 a 2 2 1->2 a 2->F2 2->2 a
In [ ]:
vcsn.context('lal, zmin').expression('<2>a+<3>a*').automaton().determinize()
In [ ]:
! echo 'int main(){}' > /tmp/tt.cc
In [ ]:
! PYTHON=/usr/bin/python3 PYTHONHOME= PYTHONPATH=/usr/local/lib/python3.4/site-packages sh -x /usr/local/bin/vcsn compile /tmp/foo.cc
In [8]:
! unset PYTHONHOME=; PYTHONPATH=/usr/local/lib/python3.4/site-packages /usr/local/libexec/vcsn/vcsn-compile -vvv /tmp/foo.cc

/usr/local/lib/python3.4/site-packages/vcsn_tools/demangle.py:11: UserWarning: you should install regex for Python
  warnings.warn('you should install regex for Python')
args:
  ccache: ccache
  color: auto
  cppflags: -I/usr/local/include
  cxx: g++ -Wl,--no-as-needed
  cxxflags: -g -O2 -std=c++17
  datadir: /usr/local/share/vcsn
  force: False
  includedir: /usr/local/include
  input: /tmp/foo.cc
  ipython: ipython3
  ldflags: -L/usr/local/lib/vcsn -lrt -pthread  -lboost_filesystem  -lboost_system
  libdir: /usr/local/lib/vcsn
  plain: False
  pyexecdir: /usr/local/lib/python3.4/site-packages
  python: python3
  quiet: False
  shared: False
  vars: []
  verbose: 4
  version: 2.4-116-gd434d8ea
/usr/local/libexec/vcsn/vcsn-compile: compilation not needed
In [9]:
! unset PYTHONHOME=; /usr/local/libexec/vcsn/vcsn-compile -vvv /tmp/foo.cc

Traceback (most recent call last):
  File "/usr/local/libexec/vcsn/vcsn-compile", line 13, in <module>
    from vcsn_cxx import configuration
ImportError: No module named 'vcsn_cxx'
In [6]:
! unset PYTHONHOME; export PYTHONPATH=/usr/local/lib/python3.4/site-packages; /usr/local/libexec/vcsn/vcsn-score --version

/usr/local/libexec/vcsn/vcsn-score:21: UserWarning: not compiled with -DNDEBUG, benches are irrelevant
  warnings.warn('not compiled with -DNDEBUG, benches are irrelevant')
/usr/local/libexec/vcsn/vcsn-score:23: UserWarning: not compiled with -O3, benches are irrelevant
  warnings.warn('not compiled with -O3, benches are irrelevant')
usage: vcsn-score [-h] [-O RE] [-r NUM] [-v] [--check]
vcsn-score: error: unrecognized arguments: --version
In [37]:
! unset PYTHONHOME; /usr/bin/python3 -c 'print("foof")'

foof
In [39]:
! env | sort

AR=ar
AS=as
CCACHE_BASEDIR=/projects/sage/sage-7.5
CC=gcc
CHMOD=chmod
CLICOLOR=1
CPATH=/projects/sage/sage-7.5/local/include:/usr/include/x86_64-linux-gnu
CP=cp
CXX=g++
CYSIGNALS_CRASH_DAYS=7
CYSIGNALS_CRASH_LOGS=/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.sage//crash_logs
DOT_SAGE=/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.sage/
ECLDIR=/projects/sage/sage-7.5/local/lib/ecl/
F77=gfortran
F90=gfortran
F95=gfortran
FC=gfortran
GIT_PAGER=cat
GP_DATA_DIR=/projects/sage/sage-7.5/local/share/pari
GPDOCDIR=/projects/sage/sage-7.5/local/share/pari/doc
GPHELP=/projects/sage/sage-7.5/local/bin/gphelp
HOME=/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c
IPYTHONDIR=/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.sage//ipython-5.0.0
ISOCHRONES=/projects/data/isochrones
_JAVA_OPTIONS=-Xms64m
JPY_PARENT_PID=28978
JULIA_PKGDIR=/usr/local/share/julia/site
JUPYTER_CONFIG_DIR=/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.sage//jupyter-4.1
LANG=en_US.UTF-8
LDFLAGS=-L/projects/sage/sage-7.5/local/lib -Wl,-rpath,/projects/sage/sage-7.5/local/lib 
LD=ld
LD_LIBRARY_PATH=/usr/local/lib
LIBRARY_PATH=/projects/sage/sage-7.5/local/lib:/usr/lib/x86_64-linux-gnu
LN=ln
LOGNAME=e56b574d17c044e78cc179643e0a4c2c
MAIL=/var/mail/e56b574d17c044e78cc179643e0a4c2c
MAKE=make
MAXIMA_PREFIX=/projects/sage/sage-7.5/local
MKDIR=mkdir
MPLBACKEND=module://ipykernel.pylab.backend_inline
MPLCONFIGDIR=/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.sage//matplotlib-1.5.1
MV=mv
NLTK_DATA=/projects/data/nltk_data
PAGER=cat
PATH=/projects/sage/sage-7.5/build/bin:/projects/sage/sage-7.5/src/bin:/projects/sage/sage-7.5/local/bin:/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
PERL5LIB=/projects/sage/sage-7.5/local/lib/perl5:
PIP_INSTALL=sage-pip-install
PWD=/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c
PYTHON_EGG_CACHE=/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.sage//.python-eggs
PYTHONHOME=/projects/sage/sage-7.5/local
RANLIB=ranlib
R_MAKEVARS_SITE=/projects/sage/sage-7.5/local/lib/R/share/Makevars.site
R_MAKEVARS_USER=/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.sage//R/Makevars.user
__sage__=
SAGE64=no
SAGE_DATA=/projects/sage/sage-7.5/local/share
SAGE_DISTFILES=/projects/sage/sage-7.5/upstream
SAGE_DOC_MATHJAX=True
SAGE_DOC=/projects/sage/sage-7.5/local/share/doc/sage
SAGE_DOC_SRC=/projects/sage/sage-7.5/src/doc
SAGE_ENV_SOURCED=4
SAGE_ETC=/projects/sage/sage-7.5/local/etc
SAGE_EXTCODE=/projects/sage/sage-7.5/local/share/sage/ext
SAGE_LOCAL=/projects/sage/sage-7.5/local
SAGE_LOGS=/projects/sage/sage-7.5/logs/pkgs
SAGE_NUM_THREADS=1
SAGE_NUM_THREADS_PARALLEL=8
SAGE_ORIG_PATH=/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
SAGE_ORIG_PATH_SET=True
SAGE_REPO_ANONYMOUS=git://trac.sagemath.org/sage.git
SAGE_REPO_AUTHENTICATED=ssh://[email protected]:2222/sage.git
SAGE_ROOT=/projects/sage/sage-7.5
SAGE_SCRIPTS_DIR=/projects/sage/sage-7.5/src/bin
SAGE_SHARE=/projects/sage/sage-7.5/local/share
SAGE_SPKG_INST=/projects/sage/sage-7.5/local/var/lib/sage/installed
SAGE_SRC=/projects/sage/sage-7.5/src
SAGE_STARTUP_FILE=/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.sage//init.sage
SHELL=/bin/bash
SHLVL=0
SINGULAR_EXECUTABLE=/projects/sage/sage-7.5/local/bin/Singular
SINGULARPATH=/projects/sage/sage-7.5/local/share/singular
SMC_BASE_URL=
SMC=/projects/e56b574d-17c0-44e7-8cc1-79643e0a4c2c/.smc
TERMINFO=/projects/sage/sage-7.5/local/share/terminfo
TERM=xterm-color
TOUCH=touch
UNAME=Linux
USER=e56b574d17c044e78cc179643e0a4c2c
USERNAME=e56b574d17c044e78cc179643e0a4c2c
VCSN_PYTHON=python3
VCSN_VERBOSE=1
In [13]:
sys.version
Out[13]:
'3.4.3+ (default, Oct 14 2015, 16:03:50) \n[GCC 5.2.1 20151010]'
In [14]:
sys.executable
Out[14]:
'/usr/bin/python3'