Django Threading problem

gistfile1.py

import threading
from task.models import Task
from django.test import TestCase

class TestThread(TestCase):
    def test_run(self):
        ts = [Job() for x in range(5)]
        for t in ts:
            t.start()

class Job(threading.Thread):
    def run(self):
        try:
            t = Task.objects.all()
            print len(t)
        except Exception as ex:
            print ex.message