Fix python files in the 'examples' directory

Fix consists of following things:
- Add py2/3 compatibility
- Place imports into 3 different groups and reorder them alphabetically.
  As it is written in the "pep8" [1].

[1] https://www.python.org/dev/peps/pep-0008/

Change-Id: Iad1c6c409d2711f8c9b2d929d29072953fd49d8e
Signed-off-by: Valerii Ponomarov <kiparis.kh@gmail.com>

1 files changed, 9 insertions, 3 deletions

diff --git a/examples/test_baseclass_variables.py b/examples/test_baseclass_variables.py
index 86488d6bd..09a0ad9f1 100644
--- a/examples/test_baseclass_variables.py
+++ b/examples/test_baseclass_variables.py
@@ -1,10 +1,16 @@
 """ This Module demostrates how to use functions available in volume_ops
 """
 from glusto.core import Glusto as g
-from glustolibs.gluster.gluster_base_class import (GlusterBaseClass)
 
+from glustolibs.gluster.gluster_base_class import (
+    GlusterBaseClass,
+    runs_on,
+)
 
-class DemoGlusyerBaseClassVariables(GlusterBaseClass):
+
+@runs_on([['distributed-replicated', 'replicated'],
+          ['glusterfs', 'nfs']])
+class DemoGlusterBaseClassVariables(GlusterBaseClass):
     """Demonstrating all the functions available in volume_ops module
     """
     @classmethod
@@ -13,7 +19,7 @@ class DemoGlusyerBaseClassVariables(GlusterBaseClass):
         """
         # Read all the cluster config from the g.config and assign it to
         # class variables
-        GlusterBaseClass.setUpClass.im_func(cls)
+        cls.get_super_method(cls, 'setUpClass')()
 
         # Servers (list)
         g.log.info("Servers:\n %s\n\n", cls.servers)