To set up a development virtual environment for OpenMDAO, run: python install_openmdao_dev.py where python is in the 2.7.x series. If you have vanilla Python installed, this will create a virtualenv within the current directory called 'devenv'. If you have Anaconda, this will create a conda environment called 'openmdao-dev' by default. Either installs all of the openmdao namespace packages into their respective environments as 'develop' eggs. For additional options, run: python install_openmdao_dev.py --help For more information, go to http://openmdao.org/dev_docs