selenium test not opening a browser django

I am trying to run a selenium test and this seems nothing happening. I tested the following code to make sure the setting was working: the firefox browser loaded as it is expected.

In functional_tests.py

browser = webdriver.Firefox()
broswer.get('http://localhost:8000')

But when I changed it to as follows:

import unittest
from selenium import webdriver

class NewVistorTest(unittest.TestCase):

    def setUp(self): 
        self.browser = webdriver.Firefox()

    def tearDown(self):
        self.browser.quit()

    def test_can_open_browser(self):
        self.browser.get('http://localhost:8000')
        self.assertIn('Test', self.browser.title)

It was not opening the browser, nothing was happening. I ran this python functional_tests.py

What is the best way to organize unit tests and selenium tests. I'd like to run it by module name, not all in tests.py or test_abc.py, not by nose.