Entry.objects.filter(
    headline__startswith='What').exclude(
        pub_date__gte=datetime.now()).filter(
            pub_date__gte=datetime(2005, 1, 1))

>>> Entry.objects.filter(
...     headline__startswith='What').exclude(
...         pub_date__gte=datetime.now()).filter(
...             pub_date__gte=datetime(2005, 1, 1))
Traceback (most recent call last):
  File "<console>", line 3, in <module>
AttributeError: 'module' object has no attribute 'now'

import datetime
datetime.datetime.now

from datetime import datetime
datetime.now