INCR-427 python3 compatibility

common/test/acceptance/fixtures/__init__.py

-import os
+"""
+Envirement Setup for fixtures.
+"""
+from __future__ import absolute_import
 
+import os
 
 HOSTNAME = os.environ.get('BOK_CHOY_HOSTNAME', 'localhost')
 CMS_PORT = os.environ.get('BOK_CHOY_CMS_PORT', '8031')

common/test/acceptance/fixtures/base.py

 """
 Common code shared by course and library fixtures.
 """
+from __future__ import absolute_import
+
 import json
 
 import requests
+import six
 from lazy import lazy
 
 from common.test.acceptance.fixtures import STUDIO_BASE_URL
@@ -164,7 +167,7 @@ class XBlockContainerFixture(StudioApiFixture):
         Encode `post_dict` (a dictionary) as UTF-8 encoded JSON.
         """
         return json.dumps({
-            k: v.encode('utf-8') if isinstance(v, basestring) else v
+            k: v.encode('utf-8') if isinstance(v, six.string_types) else v
             for k, v in post_dict.items()
         })
 

common/test/acceptance/fixtures/catalog.py

 """
 Tools to create catalog-related data for use in bok choy tests.
 """
+from __future__ import absolute_import
+
 import json
 
 import requests

common/test/acceptance/fixtures/certificates.py

@@ -2,6 +2,8 @@
 Tools for creating certificates config fixture data.
 """
 
+from __future__ import absolute_import
+
 import json
 
 from common.test.acceptance.fixtures import STUDIO_BASE_URL

common/test/acceptance/fixtures/course.py

@@ -2,12 +2,15 @@
 Fixture to create a course and course components (XBlocks).
 """
 
+from __future__ import absolute_import
+
 import datetime
 import json
 import mimetypes
 from collections import namedtuple
 from textwrap import dedent
 
+import six
 from opaque_keys.edx.keys import CourseKey
 from path import Path
 
@@ -255,7 +258,7 @@ class CourseFixture(XBlockContainerFixture):
             block_id = self._course_dict['run']
         else:
             block_id = 'course'
-        return unicode(course_key.make_usage_key('course', block_id))
+        return six.text_type(course_key.make_usage_key('course', block_id))
 
     @property
     def _assets_url(self):
@@ -270,7 +273,7 @@ class CourseFixture(XBlockContainerFixture):
         Return the locator string for the course handouts
         """
         course_key = CourseKey.from_string(self._course_key)
-        return unicode(course_key.make_usage_key('course_info', 'handouts'))
+        return six.text_type(course_key.make_usage_key('course_info', 'handouts'))
 
     def _create_course(self):
         """

common/test/acceptance/fixtures/edxnotes.py

@@ -2,6 +2,8 @@
 Tools for creating edxnotes content fixture data.
 """
 
+from __future__ import absolute_import
+
 import json
 
 import factory

common/test/acceptance/fixtures/library.py

@@ -2,6 +2,9 @@
 Fixture to create a Content Library
 """
 
+from __future__ import absolute_import
+
+import six
 from opaque_keys.edx.keys import CourseKey
 
 from common.test.acceptance.fixtures import STUDIO_BASE_URL
@@ -62,7 +65,7 @@ class LibraryFixture(XBlockContainerFixture):
         Return the locator string for the LibraryRoot XBlock that is the root of the library hierarchy.
         """
         lib_key = CourseKey.from_string(self._library_key)
-        return unicode(lib_key.make_usage_key('library', 'library'))
+        return six.text_type(lib_key.make_usage_key('library', 'library'))
 
     def _create_library(self):
         """