Grab the souce from Github. Report bugs to the Issue Tracker. Have a look at our Developer Page.
You can obtain source distributions and Windows binaries from PyPi. Alternatively, you can use setuptools to install statsmodels:
easy_install statsmodels
or upgrade with:
easy_install -U statsmodels
Zipped archives and tarballs of older releases are available from github.
See the developer’s page for instructions on obtaining the most up to date version of statsmodels. We try to keep this code stable and ready for production use.
Statsmodels can be installed from source the usual way with the command python setup.py install. Full instructions can be found in the official documentation.