Use six rather than redis_cache.compat

redis_cache/compat.py

-import sys
-
-
-PY3 = (sys.version_info >= (3,))
-
 try:
     # Django 1.5+
     from django.utils.encoding import smart_text, smart_bytes
@@ -11,10 +6,3 @@ except ImportError:
     from django.utils.encoding import smart_unicode, smart_str
     smart_text = smart_unicode
     smart_bytes = smart_str
-
-if PY3:
-    bytes_type = bytes
-    from urllib.parse import parse_qs, urlparse
-else:
-    bytes_type = str
-    from urlparse import parse_qs, urlparse

redis_cache/utils.py

@@ -2,15 +2,13 @@ import importlib
 import warnings
 
 from django.core.exceptions import ImproperlyConfigured
+from django.utils import six
 from django.utils.encoding import python_2_unicode_compatible
-from redis.connection import SSLConnection
+from django.utils.six.moves.urllib.parse import parse_qs, urlparse
 
-from redis_cache.compat import smart_text, parse_qs, urlparse
+from redis.connection import SSLConnection
 
-try:
-    basestring
-except NameError:
-    basestring = str
+from redis_cache.compat import smart_text
 
 
 @python_2_unicode_compatible
@@ -38,7 +36,7 @@ def get_servers(location):
     """Returns a list of servers given the server argument passed in from
     Django.
     """
-    if isinstance(location, basestring):
+    if isinstance(location, six.string_types):
         servers = location.split(',')
     elif hasattr(location, '__iter__'):
         servers = location