Python 3 (with tests)

.travis.yml

@@ -0,0 +1,35 @@
+# Container-based builds used if "sudo: false" --> fast boot (1-6s)
+# https://docs.travis-ci.com/user/ci-environment/
+sudo: false
+dist: trusty
+
+language: python
+python:
+  - "2.7"
+  - "3.4"
+  - "3.5"
+
+env:
+    matrix:
+        - DJANGO="1.8"
+        - DJANGO="1.9"
+        - DJANGO="1.10"
+        - DJANGO="1.11"
+
+matrix:
+    include:
+        # The Django 1.8 series is the last to support Python 3.2 and 3.3.
+        - python: "3.3"
+          env: DJANGO="1.8"
+        # Django 1.11 is the first release to support Python 3.6.
+        - python: "3.6"
+          env: DJANGO="1.11"
+
+services:
+    - redis-server
+
+install:
+    - pip install tox
+
+script:
+    - tox -vvvv -e $( echo $TRAVIS_PYTHON_VERSION | sed -e 's/^2\./py2/' -e 's/^3\./py3/' )-django${DJANGO}

experiments/manager.py

@@ -8,6 +8,9 @@ class LazyAutoCreate(object):
     A lazy version of the setting is used so that tests can change the setting and still work
     """
     def __nonzero__(self):
+        return self.__bool__()
+
+    def __bool__(self):
         return getattr(settings, 'EXPERIMENTS_AUTO_CREATE', True)
 
 

experiments/models.py

@@ -65,13 +65,13 @@ def ensure_alternative_exists(self, alternative, weight=None):
 
     @property
     def default_alternative(self):
-        for alternative, alternative_conf in self.alternatives.iteritems():
+        for alternative, alternative_conf in self.alternatives.items():
             if alternative_conf.get('default'):
                 return alternative
         return conf.CONTROL_GROUP
 
     def set_default_alternative(self, alternative):
-        for alternative_name, alternative_conf in self.alternatives.iteritems():
+        for alternative_name, alternative_conf in self.alternatives.items():
             if alternative_name == alternative:
                 alternative_conf['default'] = True
             elif 'default' in alternative_conf:
@@ -81,7 +81,7 @@ def random_alternative(self):
         if all('weight' in alt for alt in self.alternatives.values()):
             return weighted_choice([(name, details['weight']) for name, details in self.alternatives.items()])
         else:
-            return random.choice(self.alternatives.keys())
+            return random.choice(list(self.alternatives))
 
     def __unicode__(self):
         return self.name

experiments/significance.py

@@ -5,7 +5,7 @@ def mann_whitney(a_distribution, b_distribution, use_continuity=True):
     """Returns (u, p_value)"""
     MINIMUM_VALUES = 20
 
-    all_values = sorted(set(a_distribution.keys() + b_distribution.keys()))
+    all_values = sorted(set(a_distribution) | set(b_distribution))
 
     count_so_far = 0
     a_rank_sum = 0
@@ -61,24 +61,24 @@ def mann_whitney(a_distribution, b_distribution, use_continuity=True):
 def chi_square_p_value(matrix):
     """
     Accepts a matrix (an array of arrays, where each child array represents a row)
-    
+
     Example from http://math.hws.edu/javamath/ryan/ChiSquare.html:
-    
+
     Suppose you conducted a drug trial on a group of animals and you
     hypothesized that the animals receiving the drug would survive better than
     those that did not receive the drug. You conduct the study and collect the
     following data:
-    
+
     Ho: The survival of the animals is independent of drug treatment.
-    
+
     Ha: The survival of the animals is associated with drug treatment.
-    
+
     In that case, your matrix should be:
     [
      [ Survivors in Test, Dead in Test ],
      [ Survivors in Control, Dead in Control ]
     ]
-    
+
     Code adapted from http://codecomments.wordpress.com/2008/02/13/computing-chi-squared-p-value-from-contingency-table-in-python/
     """
     try:

experiments/tests/test_admin.py

@@ -44,7 +44,7 @@ def test_set_alternative(self):
                 'experiment': experiment.name,
                 'alternative': alternative,
             })
-            self.assertDictEqual(json.loads(response.content), {
+            self.assertDictEqual(json.loads(response.content.decode('utf-8')), {
                 'success': True,
                 'alternative': alternative,
             })

experiments/tests/test_significance.py

@@ -52,9 +52,9 @@ def test_is_none(self):
     def test_stress(self):
         # Generate a large matrix
         matrix = []
-        for col in xrange(0, 100):
+        for col in range(0, 100):
             matrix.append([])
-            for row in xrange(0, 100):
+            for row in range(0, 100):
                 matrix[col].append(random.randint(0, 10))
 
         self.assertIsNotNone(chi_square_p_value(matrix))

experiments/utils.py

@@ -400,7 +400,7 @@ def _is_verified_human(self):
     def _get_all_enrollments(self):
         enrollments = self.session.get('experiments_enrollments', None)
         if enrollments:
-            for experiment_name, data in enrollments.items():
+            for experiment_name, data in list(enrollments.items()):
                 alternative, _, enrollment_date, last_seen = _session_enrollment_latest_version(data)
                 experiment = experiment_manager.get_experiment(experiment_name)
                 if experiment:

setup.py

@@ -20,7 +20,7 @@
     include_package_data=True,
     license='MIT',
     install_requires=[
-        'django>=1.7.0',
+        'django>=1.8',
         'django-modeldict-yplan>=1.5.0',
         'jsonfield>=1.0.3',
         'redis>=2.4.9',
@@ -36,11 +36,14 @@
         'License :: OSI Approved :: MIT License',
         'Topic :: Internet :: WWW/HTTP',
         'Topic :: Software Development :: Libraries',
-        'Programming Language :: Python :: 2 :: Only',
         'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.3',
+        'Programming Language :: Python :: 3.4',
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
         'Framework :: Django',
-        'Framework :: Django :: 1.7',
         'Framework :: Django :: 1.8',
         'Framework :: Django :: 1.9',
         'Framework :: Django :: 1.10',

tox.ini

@@ -1,16 +1,47 @@
+# Tox (http://tox.testrun.org/) is a tool for running tests
+# in multiple virtualenvs. This configuration file will run the
+# test suite on all supported python versions. To use it, "pip install tox"
+# and then run "tox" from this directory.
+
+
 [tox]
-# Python 3 isn't supported yet
+# require tox>=2.7 or refuse to run the tests.
+minversion=2.7
+
+# return success even if some of the specified environments are missing
+skip_missing_interpreters=True
+
+# The Django 1.8 series is the last to support Python 3.2 and 3.3.
+# Django 1.11 is the first release to support Python 3.6.
+# Due to the end of upstream support for Python 3.2 in February 2016, we won’t
+# test Django 1.8.x on Python 3.2 after the end of 2016.
 envlist =
-    py27-django{18,19,110,111}
-#    py32-django{18}
-#    py33-django{18}
-#    py{34,35}-django{19,110,111}
-#    py{36}-django{111}
+    py27-django{1.8,1.9,1.10,1.11}
+    py33-django{1.8}
+    py34-django{1.8,1.9,1.10,1.11}
+    py35-django{1.8,1.9,1.10,1.11}
+    py36-django{1.11}
+    pypy-django{1.8,1.9,1.10,1.11}
 
 [testenv]
-commands = python setup.py test
+recreate=True
+usedevelop=False
+passenv=
+    BUILD_NUMBER
+    BUILD_URL
+    XDG_CACHE_HOME
+
+# continue running commands even if previous commands have failed (ie: always produce coverage report)
+ignore_errors = True
+
+commands =
+    coverage erase
+    coverage run --branch --source={toxinidir}/experiments setup.py test
+    coverage report
+
 deps =
-    django18: Django>=1.8,<1.9
-    django19: Django>=1.9,<1.10
-    django110: Django>=1.10,<1.11
-    django111: Django>=1.11,<2.0
+    coverage
+    django1.8: Django>=1.8,<1.9
+    django1.9: Django>=1.9,<1.10
+    django1.10: Django>=1.10,<1.11
+    django1.11: Django>=1.11,<2.0