4 files changed, 12 insertions, 7 deletions
diff --git a/cloudinit/distros/parsers/hostname.py b/cloudinit/distros/parsers/hostname.py
index dd434ac6..e74c083c 100644
--- a/cloudinit/distros/parsers/hostname.py
+++ b/cloudinit/distros/parsers/hostname.py
@@ -4,7 +4,7 @@
 #
 # This file is part of cloud-init. See LICENSE file for license information.
 
-from six import StringIO
+from io import StringIO
 
 from cloudinit.distros.parsers import chop_comment
 
diff --git a/cloudinit/distros/parsers/hosts.py b/cloudinit/distros/parsers/hosts.py
index 64444581..54e4e934 100644
--- a/cloudinit/distros/parsers/hosts.py
+++ b/cloudinit/distros/parsers/hosts.py
@@ -4,7 +4,7 @@
 #
 # This file is part of cloud-init. See LICENSE file for license information.
 
-from six import StringIO
+from io import StringIO
 
 from cloudinit.distros.parsers import chop_comment
 
diff --git a/cloudinit/distros/parsers/resolv_conf.py b/cloudinit/distros/parsers/resolv_conf.py
index a62055ae..299d54b5 100644
--- a/cloudinit/distros/parsers/resolv_conf.py
+++ b/cloudinit/distros/parsers/resolv_conf.py
@@ -4,7 +4,7 @@
 #
 # This file is part of cloud-init. See LICENSE file for license information.
 
-from six import StringIO
+from io import StringIO
 
 from cloudinit.distros.parsers import chop_comment
 from cloudinit import log as logging
diff --git a/cloudinit/distros/parsers/sys_conf.py b/cloudinit/distros/parsers/sys_conf.py
index c27b5d5d..dee4c551 100644
--- a/cloudinit/distros/parsers/sys_conf.py
+++ b/cloudinit/distros/parsers/sys_conf.py
@@ -4,11 +4,9 @@
 #
 # This file is part of cloud-init. See LICENSE file for license information.
 
-import six
-from six import StringIO
-
 import pipes
 import re
+from io import StringIO
 
 # This library is used to parse/write
 # out the various sysconfig files edited (best attempt effort)
@@ -43,6 +41,13 @@ def _contains_shell_variable(text):
 
 
 class SysConf(configobj.ConfigObj):
+    """A configobj.ConfigObj subclass specialised for sysconfig files.
+
+    :param contents:
+        The sysconfig file to parse, in a format accepted by
+        ``configobj.ConfigObj.__init__`` (i.e. "a filename, file like object,
+        or list of lines").
+    """
     def __init__(self, contents):
         configobj.ConfigObj.__init__(self, contents,
                                      interpolation=False,
@@ -58,7 +63,7 @@ class SysConf(configobj.ConfigObj):
         return out_contents.getvalue()
 
     def _quote(self, value, multiline=False):
-        if not isinstance(value, six.string_types):
+        if not isinstance(value, str):
             raise ValueError('Value "%s" is not a string' % (value))
         if len(value) == 0:
             return ''