Drop support for EOL Python 2.6

.travis.yml

@@ -1,26 +1,19 @@
 ---
 language: python
 python:
-  - 2.6
   - 2.7
   - 3.4
   - 3.5
   - 3.6
   - nightly
 install:
-  - pip install pyyaml flake8 flake8-import-order
-  - if [[ $TRAVIS_PYTHON_VERSION == 2.6 ]]; then pip install unittest2; fi
-  - if [[ $TRAVIS_PYTHON_VERSION != 2.6 ]]; then pip install coveralls; fi
+  - pip install pyyaml coveralls flake8 flake8-import-order
   - if [[ $TRAVIS_PYTHON_VERSION != 2* ]]; then pip install sphinx; fi
   - pip install .
 script:
-  - if [[ $TRAVIS_PYTHON_VERSION != 2.6 ]]; then flake8 .; fi
+  - flake8 .
   - yamllint --strict $(git ls-files '*.yaml' '*.yml')
-  - if [[ $TRAVIS_PYTHON_VERSION != 2.6 ]]; then
-      coverage run --source=yamllint setup.py test;
-    else
-      python setup.py test;
-    fi
+  - coverage run --source=yamllint setup.py test
   - if [[ $TRAVIS_PYTHON_VERSION != 2* ]]; then
       python setup.py build_sphinx;
     fi

tests/common.py

@@ -16,12 +16,7 @@
 
 import os
 import tempfile
-import sys
-try:
-    assert sys.version_info >= (2, 7)
-    import unittest
-except AssertionError:
-    import unittest2 as unittest
+import unittest
 
 import yaml
 

tests/rules/test_line_length.py

@@ -15,11 +15,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import sys
-try:
-    assert sys.version_info >= (2, 7)
-    import unittest
-except AssertionError:
-    import unittest2 as unittest
+import unittest
 
 from tests.common import RuleTestCase
 

tests/test_cli.py

@@ -24,18 +24,13 @@ import os
 import pty
 import shutil
 import sys
-try:
-    assert sys.version_info >= (2, 7)
-    import unittest
-except AssertionError:
-    import unittest2 as unittest
+import unittest
 
 from tests.common import build_temp_workspace
 
 from yamllint import cli
 
 
-@unittest.skipIf(sys.version_info < (2, 7), 'Python 2.6 not supported')
 class CommandLineTestCase(unittest.TestCase):
     @classmethod
     def setUpClass(cls):

tests/test_config.py

@@ -21,11 +21,7 @@ except ImportError:
 import os
 import shutil
 import sys
-try:
-    assert sys.version_info >= (2, 7)
-    import unittest
-except AssertionError:
-    import unittest2 as unittest
+import unittest
 
 from tests.common import build_temp_workspace
 
@@ -338,7 +334,6 @@ class IgnorePathConfigTestCase(unittest.TestCase):
 
         shutil.rmtree(cls.wd)
 
-    @unittest.skipIf(sys.version_info < (2, 7), 'Python 2.6 not supported')
     def test_run_with_ignored_path(self):
         sys.stdout = StringIO()
         with self.assertRaises(SystemExit):

tests/test_linter.py

@@ -15,12 +15,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import io
-import sys
-try:
-    assert sys.version_info >= (2, 7)
-    import unittest
-except AssertionError:
-    import unittest2 as unittest
+import unittest
 
 from yamllint.config import YamlLintConfig
 from yamllint import linter

tests/test_module.py

@@ -19,17 +19,12 @@ import shutil
 import subprocess
 import tempfile
 import sys
-try:
-    assert sys.version_info >= (2, 7)
-    import unittest
-except AssertionError:
-    import unittest2 as unittest
+import unittest
 
 
 PYTHON = sys.executable or 'python'
 
 
-@unittest.skipIf(sys.version_info < (2, 7), 'Python 2.6 not supported')
 class ModuleTestCase(unittest.TestCase):
     def setUp(self):
         self.wd = tempfile.mkdtemp(prefix='yamllint-tests-')

tests/test_parser.py

@@ -14,12 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-import sys
-try:
-    assert sys.version_info >= (2, 7)
-    import unittest
-except AssertionError:
-    import unittest2 as unittest
+import unittest
 
 import yaml