When this directive is used, authentication information is obtained
from a REMOTE_USER key in the WSGI environment, assumed to
be set by a WSGI server or an upstream middleware component.
- The environ_key is the name that will be used to obtain the
remote user value from the WSGI environment. It defaults to
- The callback is a Python dotted name to a function passed the
string representing the remote user and the request as positional
arguments. The callback is expected to return None if the user
represented by the string doesn’t exist or a sequence of group
identifiers (possibly empty) if the user does exist. If
callback is None, the userid will be assumed to exist with no
groups. It defaults to None.
You may create an instance of the
pass it to the pyramid.config.Configurator
constructor as the authentication_policy argument during initial