How to do a less than or equal to filter in Django queryset?

I am attempting to filter users by a custom field in each users profile called profile. This field is called level and is an integer between 0-3.

If I filter using equals, I get a list of users with the chosen level as expected:

user_list = User.objects.filter(userprofile__level = 0)

When I try to filter using less than:

user_list = User.objects.filter(userprofile__level < 3)

I get the error:

global name ‘userprofile__level’ is not defined

Is there a way to filter by < or >, or am I barking up the wrong tree.