# This file is part of QuTiP: Quantum Toolbox in Python.
#
# Copyright (c) 2011 and later, Paul D. Nation and Robert J. Johansson.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# 3. Neither the name of the QuTiP: Quantum Toolbox in Python nor the names
# of its contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
###############################################################################
from __future__ import division, print_function, absolute_import
import os
# Fix the multiprocessing issue with NumPy compiled against OPENBLAS
if 'OPENBLAS_MAIN_FREE' not in os.environ:
os.environ['OPENBLAS_MAIN_FREE'] = '1'
# automatically set number of threads used by MKL and openblas to 1
# prevents errors when running things in parallel. Should be set
# by user directly in a script or notebook if >1 is needed.
# Must be set BEFORE importing NumPy
if 'MKL_NUM_THREADS' not in os.environ:
os.environ['MKL_NUM_THREADS'] = '1'
if 'OPENBLAS_NUM_THREADS' not in os.environ:
os.environ['OPENBLAS_NUM_THREADS'] = '1'
import sys
import warnings
import qutip.settings
import qutip.version
from qutip.version import version as __version__
from qutip.utilities import _version2int
# -----------------------------------------------------------------------------
# Check if we're in IPython.
try:
__IPYTHON__
qutip.settings.ipython = True
except:
qutip.settings.ipython = False
# -----------------------------------------------------------------------------
# Check for minimum requirements of dependencies, give the user a warning
# if the requirements aren't fulfilled
#
numpy_requirement = "1.6.0"
try:
import numpy
if _version2int(numpy.__version__) < _version2int(numpy_requirement):
print("QuTiP warning: old version of numpy detected " +
("(%s), requiring %s." %
(numpy.__version__, numpy_requirement)))
except:
warnings.warn("numpy not found.")
scipy_requirement = "0.11.0"
try:
import scipy
if _version2int(scipy.__version__) < _version2int(scipy_requirement):
print("QuTiP warning: old version of scipy detected " +
("(%s), requiring %s." %
(scipy.__version__, scipy_requirement)))
except:
warnings.warn("scipy not found.")
# -----------------------------------------------------------------------------
# check to see if running from install directory for released versions.
#
top_path = os.path.dirname(os.path.dirname(__file__))
try:
setup_file = open(top_path + '/setup.py', 'r')
except:
pass
else:
if ('QuTiP' in setup_file.readlines()[1][3:]) and qutip.version.release:
print("You are in the installation directory. " +
"Change directories before running QuTiP.")
setup_file.close()
del top_path
# -----------------------------------------------------------------------------
# setup the cython environment
#
_cython_requirement = "0.15.0"
try:
import Cython
if _version2int(Cython.__version__) < _version2int(_cython_requirement):
print("QuTiP warning: old version of cython detected " +
("(%s), requiring %s." %
(Cython.__version__, _cython_requirement)))
import pyximport
os.environ['CFLAGS'] = '-O3 -w -ffast-math -march=native -mfpmath=sse'
pyximport.install(setup_args={'include_dirs': [numpy.get_include()]})
except Exception as e:
print("QuTiP warning: Cython setup failed: " + str(e))
else:
del Cython, pyximport
# -----------------------------------------------------------------------------
# Load user configuration if present: override defaults.
#
try:
if os.name == "nt":
qutip_rc_file = os.path.join(
os.getenv('APPDATA'), 'qutip', "qutiprc"
)
else:
qutip_rc_file = os.path.join(
# This should possibly be changed to ~/.config/qutiprc,
# to follow XDG specs. Also, OS X uses a different naming
# convention as well.
os.environ['HOME'], ".qutiprc"
)
qutip.settings.load_rc_file(qutip_rc_file)
except Exception as e:
try:
qutip.settings._logger.warning("Error loading RC file.", exc_info=1)
except:
pass
# -----------------------------------------------------------------------------
# cpu/process configuration
#
import multiprocessing
# Check if environ flag for qutip processes is set
if 'QUTIP_NUM_PROCESSES' in os.environ:
qutip.settings.num_cpus = int(os.environ['QUTIP_NUM_PROCESSES'])
else:
os.environ['QUTIP_NUM_PROCESSES'] = str(qutip.settings.num_cpus)
if qutip.settings.num_cpus == 0:
# if num_cpu is 0 set it to the available number of cores
from qutip.hardware_info import hardware_info
info = hardware_info()
if 'cpus' in info:
qutip.settings.num_cpus = info['cpus']
else:
qutip.settings.num_cpus = multiprocessing.cpu_count()
# -----------------------------------------------------------------------------
# Load configuration from environment variables: override defaults and
# configuration file.
#
# check for fortran mcsolver files
try:
from qutip.fortran import mcsolve_f90
except:
qutip.settings.fortran = False
else:
qutip.settings.fortran = True
# check for scikits.umfpack
try:
import scikits.umfpack as umfpack
except:
qutip.settings.umfpack = False
else:
qutip.settings.umfpack = True
del umfpack
# -----------------------------------------------------------------------------
# Check that import modules are compatible with requested configuration
#
# Check for Matplotlib
try:
import matplotlib
except:
warnings.warn("matplotlib not found: Graphics will not work.")
else:
del matplotlib
# -----------------------------------------------------------------------------
# Clean name space
#
del os, sys, numpy, scipy, multiprocessing
# -----------------------------------------------------------------------------
# Load modules
#
# core
from qutip.qobj import *
from qutip.states import *
from qutip.operators import *
from qutip.expect import *
from qutip.tensor import *
from qutip.superoperator import *
from qutip.superop_reps import *
from qutip.subsystem_apply import *
from qutip.graph import *
# graphics
from qutip.bloch import *
from qutip.visualization import *
from qutip.orbital import *
from qutip.bloch3d import *
from qutip.matplotlib_utilities import *
# library functions
from qutip.tomography import *
from qutip.wigner import *
from qutip.random_objects import *
from qutip.simdiag import *
from qutip.entropy import *
from qutip.metrics import *
from qutip.partial_transpose import *
from qutip.permute import *
from qutip.continuous_variables import *
from qutip.distributions import *
from qutip.three_level_atom import *
# evolution
from qutip.solver import *
from qutip.rhs_generate import *
from qutip.mesolve import *
from qutip.sesolve import *
from qutip.mcsolve import *
from qutip.stochastic import *
from qutip.essolve import *
from qutip.eseries import *
from qutip.propagator import *
from qutip.floquet import *
from qutip.bloch_redfield import *
from qutip.steadystate import *
from qutip.correlation import *
from qutip.countstat import *
# quantum information
from qutip.qip import *
# utilities
from qutip.parallel import *
from qutip.utilities import *
from qutip.fileio import *
from qutip.about import *