django - 'module' object has no attribute 'serialize'

edit - this is using Python 3.3 and Django 1.6

I don't know what I'm doing wrong here.

views.py

from django.core import serializers
from django.core.serializers import serialize
from django.http import HttpResponse
from itertools import chain

def test_queryjoin(request):
    jobmstquery = Jobmst.objects.using('database1').filter(jobmst_id=3296)
    jobdtlquery = Jobdtl.objects.using('database1').filter(jobdtl_id=3296)
    queryset = list(chain(jobmstquery, jobdtlquery))
    queryresults = serializers.serialize('python', queryset)
    return HttpResponse(queryset)

But when I run it I get the following error -

'module' object has no attribute 'serialize'

on this specific line -

queryresults = serializers.serialize('python', queryset)

edit - doing the following still generates the same error -

queryresults = serializers.serialize('json', jobmstquery)

same with this -

queryresults = serializers.serialize('json', Jobmst.objects.using('database1').filter(jobmst_id = 3296))

edit - This is getting weirder... it works from shell...

from django.core import serializers
from django.core.serializers import serialize
from TidalDEV.models import Jobmst
jobmstquery = Jobmst.objects.using('database1').filter(jobmst_id=3296)
queryresults = serializers.serialize('json', jobmstquery)
print (queryresults)