Updated 'or_lookup' tests to give example of more compact syntax, for the sake...

>>> Article.objects.filter(Q(headline__startswith='Hello') & Q(headline__startswith='Goodbye'))

[]

>>> Article.objects.filter(headline__startswith='Hello') & Article.objects.filter(headline__startswith='Goodbye')

# You can shorten this syntax with code like the following,

# which is especially useful if building the query in stages:

>>> articles = Article.objects.all()

>>> articles.filter(headline__startswith='Hello') & articles.filter(headline__startswith='Goodbye')

[]

>>> Article.objects.filter(headline__startswith='Hello') & Article.objects.filter(headline__contains='bye')

>>> articles.filter(headline__startswith='Hello') & articles.filter(headline__contains='bye')

[Hello and goodbye]

>>> Article.objects.filter(Q(headline__contains='bye'), headline__startswith='Hello')