Source distributions and Windows installers for Biopython 1.61 are now available from the downloads page on the Biopython website and from the Python Package Index (PyPI). The updated Biopython Tutorial and Cookbook is online ( PDF). Platforms/Deployment We currently support Python 2.5, 2.6 and 2.7 and also test under Python 3.1, 3.2 and 3.3 (including modules using NumPy), and Jython 2.5 and PyPy 1.9 (Jython and PyPy do not