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Metadata-Version: 2.1 | |
Name: PuLP | |
Version: 2.7.0 | |
Summary: PuLP is an LP modeler written in python. PuLP can generate MPS or LP files and call GLPK, COIN CLP/CBC, CPLEX, and GUROBI to solve linear problems. | |
Home-page: https://github.com/coin-or/pulp | |
Author: J.S. Roy and S.A. Mitchell and F. Peschiera | |
Author-email: [email protected] | |
License: UNKNOWN | |
Keywords: Optimization,Linear Programming,Operations Research | |
Platform: UNKNOWN | |
Classifier: Development Status :: 5 - Production/Stable | |
Classifier: Environment :: Console | |
Classifier: Intended Audience :: Science/Research | |
Classifier: License :: OSI Approved :: BSD License | |
Classifier: Natural Language :: English | |
Classifier: Programming Language :: Python | |
Classifier: Topic :: Scientific/Engineering :: Mathematics | |
Description-Content-Type: text/x-rst | |
pulp | |
************************** | |
.. image:: https://travis-ci.org/coin-or/pulp.svg?branch=master | |
:target: https://travis-ci.org/coin-or/pulp | |
PuLP is an LP modeler written in Python. PuLP can generate MPS or LP files | |
and call GLPK_, COIN-OR CLP/`CBC`_, CPLEX_, GUROBI_, MOSEK_, XPRESS_, CHOCO_, MIPCL_, SCIP_ to solve linear | |
problems. | |
Installation | |
================ | |
The easiest way to install pulp is via `PyPi <https://pypi.python.org/pypi/PuLP>`_ | |
If pip is available on your system:: | |
python -m pip install pulp | |
Otherwise follow the download instructions on the PyPi page. | |
If you want to install the latest version from github you can run the following:: | |
python -m pip install -U git+https://github.com/coin-or/pulp | |
On Linux and OSX systems the tests must be run to make the default | |
solver executable. | |
:: | |
sudo pulptest | |
Examples | |
================ | |
See the examples directory for examples. | |
PuLP requires Python 2.7 or Python >= 3.4. | |
The examples use the default solver (CBC). To use other solvers they must be available (installed and accessible). For more information on how to do that, see the `guide on configuring solvers <https://coin-or.github.io/pulp/guides/how_to_configure_solvers.html>`_. | |
Documentation | |
================ | |
Documentation is found on https://coin-or.github.io/pulp/. | |
Use LpVariable() to create new variables. To create a variable 0 <= x <= 3:: | |
x = LpVariable("x", 0, 3) | |
To create a variable 0 <= y <= 1:: | |
y = LpVariable("y", 0, 1) | |
Use LpProblem() to create new problems. Create "myProblem":: | |
prob = LpProblem("myProblem", LpMinimize) | |
Combine variables to create expressions and constraints, then add them to the | |
problem:: | |
prob += x + y <= 2 | |
If you add an expression (not a constraint), it will | |
become the objective:: | |
prob += -4*x + y | |
To solve with the default included solver:: | |
status = prob.solve() | |
To use another sovler to solve the problem:: | |
status = prob.solve(GLPK(msg = 0)) | |
Display the status of the solution:: | |
LpStatus[status] | |
> 'Optimal' | |
You can get the value of the variables using value(). ex:: | |
value(x) | |
> 2.0 | |
Exported Classes: | |
* ``LpProblem`` -- Container class for a Linear programming problem | |
* ``LpVariable`` -- Variables that are added to constraints in the LP | |
* ``LpConstraint`` -- A constraint of the general form | |
a1x1+a2x2 ...anxn (<=, =, >=) b | |
* ``LpConstraintVar`` -- Used to construct a column of the model in column-wise modelling | |
Exported Functions: | |
* ``value()`` -- Finds the value of a variable or expression | |
* ``lpSum()`` -- given a list of the form [a1*x1, a2x2, ..., anxn] will construct a linear expression to be used as a constraint or variable | |
* ``lpDot()`` --given two lists of the form [a1, a2, ..., an] and [ x1, x2, ..., xn] will construct a linear expression to be used as a constraint or variable | |
Building the documentation | |
-------------------------- | |
The PuLP documentation is built with `Sphinx <https://www.sphinx-doc.org>`_. We recommended using a | |
`virtual environment <https://docs.python.org/3/library/venv.html>`_ to build the documentation locally. | |
To build, run the following in a terminal window, in the PuLP root directory | |
:: | |
cd pulp | |
python -m pip install -r requirements-dev.txt | |
cd doc | |
make html | |
A folder named html will be created inside the ``build/`` directory. | |
The home page for the documentation is ``doc/build/html/index.html`` which can be opened in a browser. | |
**Comments, bug reports, patches and suggestions are welcome.** | |
* Comments and suggestions: https://github.com/coin-or/pulp/discussions | |
* Bug reports: https://github.com/coin-or/pulp/issues | |
* Patches: https://github.com/coin-or/pulp/pulls | |
Copyright J.S. Roy, 2003-2005 | |
Copyright Stuart A. Mitchell | |
See the LICENSE file for copyright information. | |
.. _Python: http://www.python.org/ | |
.. _GLPK: http://www.gnu.org/software/glpk/glpk.html | |
.. _CBC: https://github.com/coin-or/Cbc | |
.. _CPLEX: http://www.cplex.com/ | |
.. _GUROBI: http://www.gurobi.com/ | |
.. _MOSEK: https://www.mosek.com/ | |
.. _XPRESS: https://www.fico.com/es/products/fico-xpress-solver | |
.. _CHOCO: https://choco-solver.org/ | |
.. _MIPCL: http://mipcl-cpp.appspot.com/ | |
.. _SCIP: https://www.scipopt.org/ | |