#  ___________________________________________________________________________
#
#  Pyomo: Python Optimization Modeling Objects
#  Copyright 2017 National Technology and Engineering Solutions of Sandia, LLC
#  Under the terms of Contract DE-NA0003525 with National Technology and
#  Engineering Solutions of Sandia, LLC, the U.S. Government retains certain
#  rights in this software.
#  This software is distributed under the 3-clause BSD License.
#  ___________________________________________________________________________

from pyomo.common.dependencies import attempt_import, scipy, scipy_available

# Note: sparse.BlockVector leverages the __array__ufunc__ interface
# released in numpy 1.13
numpy, numpy_available = attempt_import(
    'numpy',
    'Pynumero requires the optional Pyomo dependency "numpy"',
    minimum_version='1.13.0',
    defer_check=False)

scipy_sparse, scipy_sparse_available = attempt_import(
    'scipy.sparse',
    'Pynumero requires the optional Pyomo dependency "scipy"',
    defer_check=False)

if not numpy_available:
    numpy.generate_import_warning('pyomo.contrib.pynumero')

if not scipy_available:
    scipy_sparse.generate_import_warning('pyomo.contrib.pynumero')