Upgrade all code to be Python3 only

.travis.yml

@@ -1,11 +1,10 @@
 language: python
 python:
-  - 2.7
   - 3.6
-env:
-  - ES_VERSION=1.3.9 ES_DOWNLOAD_URL=https://download.elastic.co/elasticsearch/elasticsearch/elasticsearch-${ES_VERSION}.tar.gz
 matrix:
   include:
+    - python: 3.6
+      env: TOXENV=py36 ES_VERSION=1.3.9 ES_DOWNLOAD_URL=https://download.elastic.co/elasticsearch/elasticsearch/elasticsearch-${ES_VERSION}.tar.gz
     - python: 3.6
       env: TOXENV=docs
     - python: 3.6
@@ -45,6 +44,6 @@ notifications:
 
 branches:
   only:
-  - master 
+  - master
   - rel # Community release branch
   - relcorp # Corporate release branch

readthedocs/__init__.py

@@ -1,9 +1,10 @@
 # -*- coding: utf-8 -*-
+
 """Read the Docs."""
 
 import os.path
 
-from future.moves.configparser import RawConfigParser
+from configparser import RawConfigParser
 
 
 def get_version(setupcfg_path):

readthedocs/analytics/__init__.py

@@ -1,3 +1,5 @@
-"""App init"""
+# -*- coding: utf-8 -*-
 
-default_app_config = 'readthedocs.analytics.apps.AnalyticsAppConfig'    # noqa
+"""App init."""
+
+default_app_config = 'readthedocs.analytics.apps.AnalyticsAppConfig'  # noqa

readthedocs/analytics/apps.py

@@ -1,12 +1,13 @@
+# -*- coding: utf-8 -*-
+
 """Django app config for the analytics app."""
 
-from __future__ import absolute_import
 from django.apps import AppConfig
 
 
 class AnalyticsAppConfig(AppConfig):
 
-    """Analytics app init code"""
+    """Analytics app init code."""
 
     name = 'readthedocs.analytics'
     verbose_name = 'Analytics'

readthedocs/analytics/tasks.py

@@ -1,6 +1,6 @@
-"""Tasks for Read the Docs' analytics"""
+# -*- coding: utf-8 -*-
 
-from __future__ import absolute_import
+"""Tasks for Read the Docs' analytics."""
 
 from django.conf import settings
 
@@ -11,24 +11,24 @@
 
 
 DEFAULT_PARAMETERS = {
-    'v': '1',               # analytics version (always 1)
-    'aip': '1',             # anonymize IP
+    'v': '1',  # analytics version (always 1)
+    'aip': '1',  # anonymize IP
     'tid': settings.GLOBAL_ANALYTICS_CODE,
 
     # User data
-    'uip': None,            # User IP address
-    'ua': None,             # User agent
+    'uip': None,  # User IP address
+    'ua': None,  # User agent
 
     # Application info
     'an': 'Read the Docs',
-    'av': readthedocs.__version__,    # App version
+    'av': readthedocs.__version__,  # App version
 }
 
 
 @app.task(queue='web')
 def analytics_pageview(url, title=None, **kwargs):
     """
-    Send a pageview to Google Analytics
+    Send a pageview to Google Analytics.
 
     :see: https://developers.google.com/analytics/devguides/collection/protocol/v1/parameters
     :param url: the URL of the pageview
@@ -37,18 +37,21 @@ def analytics_pageview(url, title=None, **kwargs):
     """
     data = {
         't': 'pageview',
-        'dl': url,          # URL of the pageview (required)
-        'dt': title,        # Title of the page
+        'dl': url,  # URL of the pageview (required)
+        'dt': title,  # Title of the page
     }
     data.update(DEFAULT_PARAMETERS)
     data.update(kwargs)
     send_to_analytics(data)
 
 
 @app.task(queue='web')
-def analytics_event(event_category, event_action, event_label=None, event_value=None, **kwargs):
+def analytics_event(
+        event_category, event_action, event_label=None, event_value=None,
+        **kwargs
+):
     """
-    Send an analytics event to Google Analytics
+    Send an analytics event to Google Analytics.
 
     :see: https://developers.google.com/analytics/devguides/collection/protocol/v1/devguide#event
     :param event_category: the category of the event
@@ -58,11 +61,11 @@ def analytics_event(event_category, event_action, event_label=None, event_value=
     :param kwargs: extra event parameters to send to GA
     """
     data = {
-        't': 'event',           # GA event - don't change
-        'ec': event_category,   # Event category (required)
-        'ea': event_action,     # Event action (required)
-        'el': event_label,      # Event label
-        'ev': event_value,      # Event value (numeric)
+        't': 'event',  # GA event - don't change
+        'ec': event_category,  # Event category (required)
+        'ea': event_action,  # Event action (required)
+        'el': event_label,  # Event label
+        'ev': event_value,  # Event value (numeric)
     }
     data.update(DEFAULT_PARAMETERS)
     data.update(kwargs)

readthedocs/analytics/tests.py

@@ -1,5 +1,4 @@
-from __future__ import absolute_import, unicode_literals
-
+# -*- coding: utf-8 -*-
 from django.test import TestCase
 
 from .utils import anonymize_ip_address, anonymize_user_agent
@@ -29,4 +28,3 @@ def test_anonymize_ua(self):
             anonymize_user_agent('Some rare user agent'),
             'Rare user agent',
         )
-

readthedocs/analytics/utils.py

@@ -1,26 +1,23 @@
-"""Utilities related to analytics"""
+# -*- coding: utf-8 -*-
+
+"""Utilities related to analytics."""
 
-from __future__ import absolute_import, unicode_literals
 import hashlib
+import ipaddress
 import logging
 
+import requests
 from django.conf import settings
-from django.utils.encoding import force_text, force_bytes
 from django.utils.crypto import get_random_string
-import requests
+from django.utils.encoding import force_bytes, force_text
 from user_agents import parse
 
-try:
-    # Python 3.3+ only
-    import ipaddress
-except ImportError:
-    from .vendor import ipaddress
 
-log = logging.getLogger(__name__)   # noqa
+log = logging.getLogger(__name__)  # noqa
 
 
 def get_client_ip(request):
-    """Gets the real IP based on a request object"""
+    """Gets the real IP based on a request object."""
     ip_address = request.META.get('REMOTE_ADDR')
 
     # Get the original IP address (eg. "X-Forwarded-For: client, proxy1, proxy2")
@@ -32,7 +29,7 @@ def get_client_ip(request):
 
 
 def anonymize_ip_address(ip_address):
-    """Anonymizes an IP address by zeroing the last 2 bytes"""
+    """Anonymizes an IP address by zeroing the last 2 bytes."""
     # Used to anonymize an IP by zero-ing out the last 2 bytes
     ip_mask = int('0xFFFFFFFFFFFFFFFFFFFFFFFFFFFF0000', 16)
 
@@ -46,7 +43,7 @@ def anonymize_ip_address(ip_address):
 
 
 def anonymize_user_agent(user_agent):
-    """Anonymizes rare user agents"""
+    """Anonymizes rare user agents."""
     # If the browser family is not recognized, this is a rare user agent
     parsed_ua = parse(user_agent)
     if parsed_ua.browser.family == 'Other' or parsed_ua.os.family == 'Other':
@@ -56,7 +53,7 @@ def anonymize_user_agent(user_agent):
 
 
 def send_to_analytics(data):
-    """Sends data to Google Analytics"""
+    """Sends data to Google Analytics."""
     if data.get('uip') and data.get('ua'):
         data['cid'] = generate_client_id(data['uip'], data['ua'])
 
@@ -74,7 +71,7 @@ def send_to_analytics(data):
         resp = requests.post(
             'https://www.google-analytics.com/collect',
             data=data,
-            timeout=3,      # seconds
+            timeout=3,  # seconds
         )
     except requests.Timeout:
         log.warning('Timeout sending to Google Analytics')
@@ -85,10 +82,10 @@ def send_to_analytics(data):
 
 def generate_client_id(ip_address, user_agent):
     """
-    Create an advertising ID
+    Create an advertising ID.
 
-    This simplifies things but essentially if a user has the same IP and same UA,
-    this will treat them as the same user for analytics purposes
+    This simplifies things but essentially if a user has the same IP and same
+    UA, this will treat them as the same user for analytics purposes
     """
     salt = b'advertising-client-id'