Requests is an HTTP library, written in Python, for human beings. This library add the support for SAML authentication, with the help of another authentication module. For example, if your SAML portal use Kerberos, you can use this:
>>> import requests
>>> from requests_saml import HTTPSAMLAuth
>>> from requests_kerberos import HTTPKerberosAuth
>>> k = HTTPKerberosAuth()
>>> s = HTTPSAMLAuth(chained_auth=k)
>>> r = requests.get("http://entreprise.example.org", auth=s)
...The entire requests.api should be supported.