gistfile1.py

def is_true(self, request):
    items = Item.objects.filter(content_type=ContentType.objects.get_for_model(User),
                                            object_id=self.get_owner(request).pk,
                                            owner=request.user)
    return bool(items)

# vs

def is_true(self, request):
    ctype = ContentType.objects.get_for_model(User)
    items = Item.objects.filter(content_type=ctype,
                                object_id=self.get_owner(request).pk,
                                owner=request.user)
    return bool(items)

# vs

def is_true(self, request):
    ctype = ContentType.objects.get_for_model(User)
    items = Item.objects.filter(content_type=ctype, owner=request.user
                                object_id=self.get_owner(request).pk)
    return bool(items)

# vs

def is_true(self, request):
    ctype = ContentType.objects.get_for_model(User)
    items = Item.objects.filter(content_type=ctype, owner=request.user)
    items = items.filter(object_id=self.get_owner(request).pk)
    return bool(items)

# vs

def is_true(self, request):
    ctype = ContentType.objects.get_for_model(User)
    items = Item.objects.filter(content_type=ctype, owner=request.user)
    return bool(items.filter(object_id=self.get_owner(request).pk))