BOM Project Capa Module Python3 Compatibility

Python3 RNG produces different results as compared to python2
In capa problems we save seed value and generate random state
using the seed. Python3 random generates a different state as
compared to python2. Thats why using random2 library to make
state genration consistent in both python versions.

common/lib/capa/capa/responsetypes.py

@@ -19,7 +19,7 @@ import inspect
 import json
 import logging
 import numbers
-import random
+import random2 as random
 import re
 import sys
 import textwrap

common/lib/capa/capa/tests/test_responsetypes.py

@@ -8,7 +8,7 @@ from __future__ import absolute_import
 import io
 import json
 import os
-import random
+import random2 as random
 import textwrap
 import unittest
 import zipfile

common/lib/capa/capa/tests/test_shuffle.py

@@ -3,7 +3,6 @@ from __future__ import absolute_import, print_function
 
 import textwrap
 import unittest
-import six
 
 from capa.responsetypes import LoncapaProblemError
 from capa.tests.helpers import new_loncapa_problem, test_capa_system
@@ -59,10 +58,7 @@ class CapaShuffleTest(unittest.TestCase):
         response = list(problem.responders.values())[0]
         self.assertFalse(response.has_mask())
         self.assertTrue(response.has_shuffle())
-        if six.PY2:
-            self.assertEqual(response.unmask_order(), ['choice_0', 'choice_aaa', 'choice_1', 'choice_ddd'])
-        else:
-            self.assertEqual(response.unmask_order(), ['choice_1', 'choice_aaa', 'choice_0', 'choice_ddd'])
+        self.assertEqual(response.unmask_order(), ['choice_0', 'choice_aaa', 'choice_1', 'choice_ddd'])
 
     def test_shuffle_different_seed(self):
         xml_str = textwrap.dedent("""

requirements/edx/base.in

@@ -138,6 +138,7 @@ pytz                                # Time zone information database
 PyYAML                              # Used to parse XModule resource templates
 redis==2.10.6                       # celery task broker
 requests-oauthlib                   # Simplifies use of OAuth via the requests library, used for CCX and LTI
+random2
 rules                               # Django extension for rules-based authorization checks
 sailthru-client==2.2.3              # For Sailthru integration
 Shapely                             # Geometry library, used for image click regions in capa

requirements/edx/base.txt

@@ -207,6 +207,7 @@ python3-saml==1.5.0
 pytz==2019.2
 pyuca==1.1
 pyyaml==5.1.2
+random2==1.0.1
 recommender-xblock==1.4.4
 redis==2.10.6
 requests-oauthlib==1.1.0

requirements/edx/development.txt

@@ -279,6 +279,7 @@ pytz==2019.2
 pyuca==1.1
 pyyaml==5.1.2
 radon==4.0.0
+random2==1.0.1
 recommender-xblock==1.4.4
 recommonmark==0.6.0
 redis==2.10.6

requirements/edx/testing.txt

@@ -270,6 +270,7 @@ pytz==2019.2
 pyuca==1.1
 pyyaml==5.1.2
 radon==4.0.0
+random2==1.0.1
 recommender-xblock==1.4.4
 redis==2.10.6
 requests-oauthlib==1.1.0