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        "author": "Jon Lund Steffensen",
        "author_email": "jonlst@gmail.com",
        "bugtrack_url": null,
        "classifiers": [
            "Development Status :: 4 - Beta",
            "Intended Audience :: Developers",
            "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
            "Programming Language :: Cython",
            "Programming Language :: Python :: 2.7",
            "Programming Language :: Python :: 3.4",
            "Topic :: Scientific/Engineering :: Mathematics"
        ],
        "description": "QSopt\\_ex Python bindings\n=========================\n\n.. image:: https://travis-ci.org/jonls/python-qsoptex.svg?branch=master\n   :alt: Build Status\n   :target: https://travis-ci.org/jonls/python-qsoptex\n\n.. image:: https://badge.fury.io/py/python-qsoptex.svg\n   :alt: PyPI badge\n   :target: http://badge.fury.io/py/python-qsoptex\n\nUsage\n-----\n\nThe Python module does not yet expose the full interface of the library\nbut just enough is available to be able to build problems or load\nproblems from a file and solve it. After solving, the values of\nvariables can be obtained, as shown below.\n\nThese values will be returned as ``fractions.Fraction`` or (if the value\nis an integer) ``int``. Similarly, when building a problem the\nparameters can be given as ``fractions.Fraction`` or ``int`` (or any\nother ``numbers.Rational``) or anything that can be converted to\n``Fraction`` using the ``Fraction`` constructor (i.e. ``float``,\n``Decimal``, etc.).\n\n.. code:: python\n\n    import qsoptex\n    import logging\n\n    logging.basicConfig(level=logging.DEBUG)\n\n    p = qsoptex.ExactProblem()\n\n    p.add_variable(name='x', objective=2, lower=3.5, upper=17.5)\n    p.add_variable(name='y', objective=-1, lower=None, upper=2)\n    p.add_linear_constraint(qsoptex.ConstraintSense.EQUAL,\n                            {'x': 1, 'y': 1}, rhs=0)\n    p.set_objective_sense(qsoptex.ObjectiveSense.MAXIMIZE)\n\n    p.set_param(qsoptex.Parameter.SIMPLEX_DISPLAY, 1)\n    status = p.solve()\n    if status == qsoptex.SolutionStatus.OPTIMAL:\n        print('Optimal solution')\n        print(p.get_objective_value())\n        print(p.get_value('x'))\n\nThe module is also able to load problems from external files:\n\n.. code:: python\n\n    p = qsoptex.ExactProblem()\n    p.read('netlib/cycle.mps', filetype='MPS')  # 'LP' is also supported\n    p.set_param(qsoptex.Parameter.SIMPLEX_DISPLAY, 1)\n    status = p.solve()\n\nKnown issues\n------------\n\nWhen creating a problem with the QSopt\\_ex library, the variables and\nconstraints will be assigned a default name if no name is specified by the\nuser. Variables will be named ``xN`` or ``x_N`` and constraints will be named\n``cN`` or ``c_N`` (where ``N`` is an integer). If the user later adds a named\nvariable or constraint which uses a name that is already in use, the name of\nthe new variable or constraint will be silently changed by the QSopt\\_ex\nlibrary. For example, the last line of the following code will remove the\nfirst constraint from the problem, not the second.\n\n.. code:: python\n\n    p = qsoptex.ExactProblem()\n    p.add_variable(name='x', objective=2, lower=3.5, upper=17.5)\n    p.add_variable(name='y', objective=-1, lower=None, upper=2)\n    p.add_linear_constraint(qsoptex.ConstraintSense.EQUAL,\n                            {'x': 1, 'y': 1}, rhs=0)\n    p.add_linear_constraint(qsoptex.ConstraintSense.LESS,\n                            {'x': 1}, rhs=15, name='c1')\n    # Deletes the first constraint, not the second\n    p.delete_linear_constraint('c1')\n\nThis issue can be avoided by always assigning names to variables and\nconstraints, or by avoiding using the same names as QSopt\\_ex uses as default\nnames.\n\nBuilding\n--------\n\nThe module requires the QSopt\\_ex library to be installed. Currently,\nthe modified version at https://github.com/jonls/qsopt-ex is required at\nversion 2.5.10.3 or later.\n\nUse ``setup.py`` to build the extension. The setup script is based on\n``setuptools``.\n\n.. code:: shell\n\n    $ ./setup install\n\nIf GnuMP or QSopt\\_ex is installed non-standard locations, the include\nand library paths can be set using the environment variables\n\n-  GnuMP: ``GMP_INCLUDE_DIR`` and ``GMP_LIBRARY_DIR``\n-  QSopt\\_ex: ``QSOPTEX_INCLUDE_DIR`` and ``QSOPTEX_LIBRARY_DIR``\n\nFor example, if GnuMP is installed in the ``/opt/local`` prefix\n\n.. code:: shell\n\n    $ GMP_INCLUDE_DIR=/opt/local/include GMP_LIBRARY_DIR=/opt/local/lib \\\n            ./setup.py install",
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