Removing hack for python 2.6 support

Python 2.6 support was dropped with the last release, we
no longer need this code.

Change-Id: I2957864a9a4ae81c6cd2042f226140a5f7af5457

openstack_auth/backend.py

@@ -18,6 +18,7 @@ import logging
 import pytz
 
 from django.conf import settings
+from django.utils.module_loading import import_string  # noqa
 from django.utils.translation import ugettext_lazy as _
 from keystoneclient import exceptions as keystone_exceptions
 
@@ -47,7 +48,7 @@ class KeystoneBackend(object):
                 ['openstack_auth.plugin.password.PasswordPlugin',
                  'openstack_auth.plugin.token.TokenPlugin'])
 
-            self._auth_plugins = [utils.import_string(p)() for p in plugins]
+            self._auth_plugins = [import_string(p)() for p in plugins]
 
         return self._auth_plugins
 

openstack_auth/utils.py

@@ -14,9 +14,7 @@
 import datetime
 import functools
 import logging
-import sys
 
-import django
 from django.conf import settings
 from django.contrib import auth
 from django.contrib.auth import middleware
@@ -29,7 +27,6 @@ from keystoneclient.auth import token_endpoint
 from keystoneclient import session
 from keystoneclient.v2_0 import client as client_v2
 from keystoneclient.v3 import client as client_v3
-import six
 from six.moves.urllib import parse as urlparse
 
 
@@ -317,65 +314,3 @@ def get_endpoint_region(endpoint):
     Keystone V2 and V3.
     """
     return endpoint.get('region_id') or endpoint.get('region')
-
-
-if django.VERSION < (1, 7):
-    try:
-        from importlib import import_module
-    except ImportError:
-        # NOTE(jamielennox): importlib was introduced in python 2.7. This is
-        # copied from the backported importlib library. See:
-        # http://svn.python.org/projects/python/trunk/Lib/importlib/__init__.py
-
-        def _resolve_name(name, package, level):
-            """Return the absolute name of the module to be imported."""
-            if not hasattr(package, 'rindex'):
-                raise ValueError("'package' not set to a string")
-            dot = len(package)
-            for x in xrange(level, 1, -1):
-                try:
-                    dot = package.rindex('.', 0, dot)
-                except ValueError:
-                    raise ValueError("attempted relative import beyond "
-                                     "top-level package")
-            return "%s.%s" % (package[:dot], name)
-
-        def import_module(name, package=None):
-            """Import a module.
-
-            The 'package' argument is required when performing a relative
-            import. It specifies the package to use as the anchor point from
-            which to resolve the relative import to an absolute import.
-            """
-            if name.startswith('.'):
-                if not package:
-                    raise TypeError("relative imports require the "
-                                    "'package' argument")
-                level = 0
-                for character in name:
-                    if character != '.':
-                        break
-                    level += 1
-                name = _resolve_name(name[level:], package, level)
-            __import__(name)
-            return sys.modules[name]
-
-    # NOTE(jamielennox): copied verbatim from django 1.7
-    def import_string(dotted_path):
-        try:
-            module_path, class_name = dotted_path.rsplit('.', 1)
-        except ValueError:
-            msg = "%s doesn't look like a module path" % dotted_path
-            six.reraise(ImportError, ImportError(msg), sys.exc_info()[2])
-
-        module = import_module(module_path)
-
-        try:
-            return getattr(module, class_name)
-        except AttributeError:
-            msg = 'Module "%s" does not define a "%s" attribute/class' % (
-                dotted_path, class_name)
-            six.reraise(ImportError, ImportError(msg), sys.exc_info()[2])
-
-else:
-    from django.utils.module_loading import import_string  # noqa