Q objects in django

Q objects can be combined using the & and | operators. When an operator is used on two Q objects, it yields a new Q object.
For example, this statement yields a single Q object that represents the “OR” of two "question__startswith" queries:

Q(question__startswith='Who') | Q(question__startswith='What') 

This is equivalent to the following SQL WHERE clause:

WHERE question LIKE 'Who%' OR question LIKE 'What%'