Remove Python 2.7 support.

.travis.yml

@@ -6,7 +6,6 @@ cache:
     directories:
         - node_modules
 python:
-    - 2.7
     - 3.4
     - 3.5
     - 3.6

README.md

@@ -158,7 +158,7 @@ and then uploaded to a server.
 
 #### Requirements
 
-- Python 2.7+, pip, pipenv
+- Python 3.4+, pip, pipenv
 - Web server ([nginx](http://nginx.org/), [Apache](http://httpd.apache.org/), etc.)
 - Application server ([uwsgi](http://projects.unbit.it/uwsgi), [gunicorn](http://gunicorn.org/), etc.)
 - Database ([sqlite](https://sqlite.org/), [Postgres](https://www.postgresql.org/), [MySQL](https://www.mysql.com/), etc.)
@@ -352,7 +352,7 @@ for all possible values.
 
 ### Requirements
 
-- Python 2.7+, pip, pipenv
+- Python 3.4+, pip, pipenv
 - NodeJS 8.x and NPM 5.x
 - Gulp
 

dashboard/tests/tests_templatetags.py

@@ -5,8 +5,6 @@ from django.contrib.auth.models import User
 from django.test import TestCase, override_settings
 from django.utils import timezone
 
-import six
-
 from core import models
 from dashboard.templatetags import cards
 
@@ -117,10 +115,6 @@ class TemplateTagsTestCase(TestCase):
             }
         ]
 
-        # Python 2 comes up with a slightly different number for one record.
-        if six.PY2:
-            stats[0]['stat'] = timezone.timedelta(0, 44228, 571428)
-
         self.assertEqual(data['stats'], stats)
 
     def test_card_timer_list(self):