def unsafe_undefined(self, obj, attribute):
        return self.undefined('access to attribute %r of %r '
                              'object is unsafe.' % (
            attribute,
            obj.__class__.__name__
        ), name=attribute, obj=obj, exc=SecurityError)
Return an undefined object for unsafe attributes.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/jinja2-2.6/jinja2/sandbox.py/SandboxedEnvironment.unsafe_undefined