Drop unsupported Python 3.3

.travis.yml

@@ -5,7 +5,6 @@ env:
   - TOX_ENV=docs
   - TOX_ENV=flake8
   - TOX_ENV=py27
-  - TOX_ENV=py33
   - TOX_ENV=py34
   - TOX_ENV=py35
 matrix:

docs/install.rst

@@ -1,7 +1,7 @@
 Installing Pelican
 ##################
 
-Pelican currently runs best on Python 2.7.x and 3.3+; earlier versions of
+Pelican currently runs best on Python 2.7.x and 3.4+; earlier versions of
 Python are not supported.
 
 You can install Pelican via several different methods. The simplest is via

pelican/settings.py

@@ -14,13 +14,13 @@ import six
 from pelican.log import LimitFilter
 
 try:
-    # SourceFileLoader is the recommended way in 3.3+
+    # SourceFileLoader is the recommended way in Python 3.3+
     from importlib.machinery import SourceFileLoader
 
     def load_source(name, path):
         return SourceFileLoader(name, path).load_module()
 except ImportError:
-    # but it does not exist in 3.2-, so fall back to imp
+    # but it does not exist in Python 2.7, so fall back to imp
     import imp
     load_source = imp.load_source
 

pelican/tests/test_testsuite.py

@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
 from __future__ import print_function, unicode_literals
 
-import sys
 import warnings
 
 from pelican.tests.support import unittest
@@ -9,8 +8,6 @@ from pelican.tests.support import unittest
 
 class TestSuiteTest(unittest.TestCase):
 
-    @unittest.skipIf(sys.version_info[:2] == (3, 3),
-                     "does not throw an exception on python 3.3")
     def test_error_on_warning(self):
         with self.assertRaises(UserWarning):
             warnings.warn('test warning')

setup.py

@@ -61,10 +61,10 @@ setup(
         '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',
+        'Programming Language :: Python :: Implementation :: CPython',
         'Topic :: Internet :: WWW/HTTP',
         'Topic :: Software Development :: Libraries :: Python Modules',
     ],

tox.ini

@@ -1,10 +1,9 @@
 [tox]
-envlist = py{27,33,34,35,36},docs,flake8
+envlist = py{27,34,35,36},docs,flake8
 
 [testenv]
 basepython =
     py27: python2.7
-    py33: python3.3
     py34: python3.4
     py35: python3.5
     py36: python3.6