In order to install pyIPOPT in pyOpt, copy the pyIPOPT folder in pyOpt/pyOpt/., and the setup.py file in pyOpt/. Make sure the setup.py file reflects your own local settings. Once this is done, simply run : python setup.py install To make sure everything is running fine, you can run the IPOPTtest.py file. Have fun. Sylvain Arreckx