diff --git a/django/contrib/localflavor/br/forms.py b/django/contrib/localflavor/br/forms.py
index 0f3e8e947e..58bf795292 100644
--- a/django/contrib/localflavor/br/forms.py
+++ b/django/contrib/localflavor/br/forms.py
@@ -9,6 +9,11 @@ from django.utils.encoding import smart_unicode
 from django.utils.translation import ugettext as _
 import re
 
+try:
+    set
+except NameError:
+    from sets import Set as set     # For Python 2.3
+
 phone_digits_re = re.compile(r'^(\d{2})[-\.]?(\d{4})[-\.]?(\d{4})$')
 
 class BRZipCodeField(RegexField):
diff --git a/tests/modeltests/test_client/models.py b/tests/modeltests/test_client/models.py
index 1ba86a4a41..32647552eb 100644
--- a/tests/modeltests/test_client/models.py
+++ b/tests/modeltests/test_client/models.py
@@ -243,7 +243,7 @@ class ClientTest(TestCase):
         
         # Log in
         login = self.client.login(username='testclient', password='password')
-        self.assertTrue(login, 'Could not log in')
+        self.failUnless(login, 'Could not log in')
 
         # Request a page that requires a login
         response = self.client.get('/test_client/login_protected_view/')
diff --git a/tests/regressiontests/test_client_regress/models.py b/tests/regressiontests/test_client_regress/models.py
index c63dc2b384..60fd909f43 100644
--- a/tests/regressiontests/test_client_regress/models.py
+++ b/tests/regressiontests/test_client_regress/models.py
@@ -252,7 +252,7 @@ class LoginTests(TestCase):
         # Create a second client, and log in.
         c = Client()
         login = c.login(username='testclient', password='password')
-        self.assertTrue(login, 'Could not log in')
+        self.failUnless(login, 'Could not log in')
 
         # Get a redirection page with the second client.
         response = c.get("/test_client_regress/login_protected_redirect_view/")
diff --git a/tests/runtests.py b/tests/runtests.py
index 85aea50180..5635047381 100755
--- a/tests/runtests.py
+++ b/tests/runtests.py
@@ -4,6 +4,13 @@ import os, sys, traceback
 import unittest
 
 import django.contrib as contrib
+
+try:
+    set
+except NameError:
+    from sets import Set as set     # For Python 2.3
+
+
 CONTRIB_DIR_NAME = 'django.contrib'
 MODEL_TESTS_DIR_NAME = 'modeltests'
 REGRESSION_TESTS_DIR_NAME = 'regressiontests'