Python SAML libraries
https://launchpad.net/pysaml2 ( http://pypi.python.org/pypi/python-saml2 )
http://proj.badc.rl.ac.uk/ndg/wiki/Security/SAML2.0 ( http://pypi.python.org/pypi/ndg-saml )
http://lasso.entrouvert.org/ (Python binding is available - GPL licensed)
http://saml.xml.org/wiki/saml-open-source-implementations (Python binding can be created for the libraries libraries listed here)