A working version on Python 2.6

.gitignore

@@ -1,4 +1,6 @@
 *.pyc
+# generated in Flask
+*.pyo
 *~
 *.conf
-*.bak
+*.bak

interfaces.py

@@ -3,7 +3,7 @@
 from interfacesReader import InterfacesReader
 from adapter import NetworkAdapter
 import toolutils
-import defaults
+#import defaults
 
 
 class Interfaces:

toolutils.py

@@ -9,8 +9,9 @@ def safe_subprocess(command_array):
     ''' return True/False, command output '''
 
     try:
-        return True, subprocess.check_output(command_array,
-                                             stderr=subprocess.STDOUT)
+        return True, subprocess.Popen(command_array,
+                                      stdout=subprocess.PIPE,
+                                      stderr=subprocess.STDOUT).communicate()[0]
     except OSError as e:
         return False, e.__str__()
     except subprocess.CalledProcessError as e: