Extract values from Django <QuerySet> in Python 3

Question

I have some python code:

UnitTestCollection.objects.filter(unit__type=unit_type)

which outputs data in format:

<QuerySet [<UnitTestCollection: VALUE1>, <UnitTestCollection: VALUE2>...

How can I extract a list of the values only i.e.

[VALUE1, VALUE2....]

Answer 1

Why not a simple list comprehension?

qs = UnitTestCollection.objects.filter(unit__type=unit_type)
my_values = [item.field_name for item in qs]

Or use values_list() to just fetch the specific field for each item directly in your queryset, with the advantage of lazy evaluation:

qs = UnitTestCollection.objects.filter(unit__type=unit_type)\
                               .values_list('field_name', flat=True)