PuLP is an LP modeler written in python. PuLP can generate MPS or LP filesand call GLPK, COIN CLP/CBC, CPLEX, and GUROBI to solve linearproblems.
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
The easiest way to install pulp is via [PyPi](https://pypi.python.org/pypi/PuLP)
If pip is available on your system
$pip install pulp
Otherwise follow the download instructions on the PyPi page
On Linux and OSX systems the tests must be run to make the default
See the examples directory for examples.
PuLP requires Python >= 2.5.
The examples use the default solver (cbc), to use other solvers they must be available.
Documentation is found on https://pythonhosted.org/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 and add them to the
>>> 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
You can get the value of the variables using value(). ex:
* 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
* 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 epression to be used
as a constraint or variable
Comments, bug reports, patches and suggestions are welcome.
Copyright J.S. Roy (email@example.com), 2003-2005
Copyright Stuart A. Mitchell (firstname.lastname@example.org)
See the LICENSE file for copyright information.
Release history Release notifications
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
|Filename, size||File type||Python version||Upload date||Hashes|
|Filename, size PuLP-1.5.9.zip (13.6 MB)||File type Source||Python version None||Upload date||Hashes View hashes|