def evalcontextfunction(f):
    f.evalcontextfunction = True
    return f
Test that a backend module which exists but does not have a
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/jinja2-2.6/jinja2/utils.py/evalcontextfunction--crossover with--dataset/ETHPy150Open nathanborror/django-registration/registration/tests/backends.py/BackendRetrievalTests.test_backend_attribute_error