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INSTALL.rst

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Requirements

PySCIPOpt requires a working installation of the SCIP Optimization Suite. If SCIP is not installed in the global path you need to specify the install location using the environment variable SCIPOPTDIR:

  • on Linux and OS X:
    export SCIPOPTDIR=<path_to_install_dir>
  • on Windows:
    set SCIPOPTDIR=<path_to_install_dir>

SCIPOPTDIR needs to have a subdirectory lib that contains the library, e.g. libscip.so (for Linux) and a subdirectory include that contains the corresponding header files:

SCIPOPTDIR
  > lib
    > libscip.so ...
  > include
    > scip
    > lpi
    > nlpi
    > ...

If you are not using the installer packages, you need to install the SCIP Optimization Suite using CMake. The Makefile system is not compatible with PySCIPOpt!

On Windows it is highly recommended to use the Anaconda Python Platform.

Installation from PyPI

pip install pyscipopt

On Windows you may need to ensure that the scip library can be found at runtime by adjusting your PATH environment variable:

  • on Windows: set PATH=%PATH%;%SCIPOPTDIR%\bin

On Linux and OS X this is encoded in the generated PySCIPOpt library and therefore not necessary.

Building everything form source

PySCIPOpt requires Cython, at least version 0.21 (pip install cython). Furthermore, you need to have the Python development files installed on your system (error message "Python.h not found"):

sudo apt-get install python-dev   # for Python 2, on Linux
sudo apt-get install python3-dev  # for Python 3, on Linux

After setting up SCIPOPTDIR as specified above, please run

python setup.py install

You may use the additional options --user or --prefix=<custom-python-path>, to build the interface locally.

Building with debug information

To use debug information in PySCIPOpt you need to build it like this:

python setup.py install --debug

Be aware that you will need the debug library of the SCIP Optimization Suite for this to work (cmake .. -DCMAKE_BUILD_TYPE=Debug).