drop Python 2.6 support and our NIH version detection

- Remove the last few places that use `if PY26`
- Replace our Python version detection logic with six's (which we were
  already using in most places)

3 files changed, 2 insertions, 28 deletions

diff --git a/cloudinit/tests/helpers.py b/cloudinit/tests/helpers.py
index 46a49416..f41180fd 100644
--- a/cloudinit/tests/helpers.py
+++ b/cloudinit/tests/helpers.py
@@ -41,26 +41,6 @@ _real_subp = util.subp
 SkipTest = unittest2.SkipTest
 skipIf = unittest2.skipIf
 
-# Used for detecting different python versions
-PY2 = False
-PY26 = False
-PY27 = False
-PY3 = False
-
-_PY_VER = sys.version_info
-_PY_MAJOR, _PY_MINOR, _PY_MICRO = _PY_VER[0:3]
-if (_PY_MAJOR, _PY_MINOR) <= (2, 6):
-    if (_PY_MAJOR, _PY_MINOR) == (2, 6):
-        PY26 = True
-    if (_PY_MAJOR, _PY_MINOR) >= (2, 0):
-        PY2 = True
-else:
-    if (_PY_MAJOR, _PY_MINOR) == (2, 7):
-        PY27 = True
-        PY2 = True
-    if (_PY_MAJOR, _PY_MINOR) >= (3, 0):
-        PY3 = True
-
 
 # Makes the old path start
 # with new base instead of whatever
@@ -357,7 +337,7 @@ class FilesystemMockingTestCase(ResourceUsingTestCase):
 
     def patchOpen(self, new_root):
         trap_func = retarget_many_wrapper(new_root, 1, open)
-        name = 'builtins.open' if PY3 else '__builtin__.open'
+        name = 'builtins.open' if six.PY3 else '__builtin__.open'
         self.patched_funcs.enter_context(mock.patch(name, trap_func))
 
     def patchStdoutAndStderr(self, stdout=None, stderr=None):
diff --git a/cloudinit/util.py b/cloudinit/util.py
index e5403f7d..a192091f 100644
--- a/cloudinit/util.py
+++ b/cloudinit/util.py
@@ -72,7 +72,6 @@ CONTAINER_TESTS = (['systemd-detect-virt', '--quiet', '--container'],
 PROC_CMDLINE = None
 
 _LSB_RELEASE = {}
-PY26 = sys.version_info[0:2] == (2, 6)
 
 
 def get_architecture(target=None):
@@ -2815,9 +2814,6 @@ def load_shell_content(content, add_empty=False, empty_val=None):
        variables.  Set their value to empty_val."""
 
     def _shlex_split(blob):
-        if PY26 and isinstance(blob, six.text_type):
-            # Older versions don't support unicode input
-            blob = blob.encode("utf8")
         return shlex.split(blob, comments=True)
 
     data = {}
diff --git a/tests/unittests/test_datasource/test_azure.py b/tests/unittests/test_datasource/test_azure.py
index 5edf36e8..6b05b8f1 100644
--- a/tests/unittests/test_datasource/test_azure.py
+++ b/tests/unittests/test_datasource/test_azure.py
@@ -11,7 +11,7 @@ from cloudinit.util import (b64e, decode_binary, load_file, write_file,
 from cloudinit.version import version_string as vs
 from cloudinit.tests.helpers import (
     HttprettyTestCase, CiTestCase, populate_dir, mock, wrap_and_call,
-    ExitStack, PY26, SkipTest)
+    ExitStack)
 
 import crypt
 import httpretty
@@ -221,8 +221,6 @@ class TestAzureDataSource(CiTestCase):
 
     def setUp(self):
         super(TestAzureDataSource, self).setUp()
-        if PY26:
-            raise SkipTest("Does not work on python 2.6")
         self.tmp = self.tmp_dir()
 
         # patch cloud_dir, so our 'seed_dir' is guaranteed empty