python3 compatibility + webapp to flask refactoring

libraries/stripe/test/helper.py

@@ -6,6 +6,8 @@ import string
 import sys
 import unittest2
 
+if 1/2 != 0: basestring=str
+
 from mock import patch, Mock
 
 import libraries.stripe

libraries/stripe/test/test_http_client.py

@@ -1,6 +1,8 @@
 import sys
 import unittest2
 
+if 1/2 != 0: basestring=str
+
 from mock import Mock, patch
 
 import libraries.stripe

libraries/stripe/test/test_integration.py

@@ -4,6 +4,8 @@ import sys
 import unittest2
 import libraries.stripe
 
+if 1/2 != 0: basestring=str
+
 from mock import patch
 from libraries.stripe.test.helper import (StripeTestCase, NOW, DUMMY_CHARGE, DUMMY_CARD)