Started removing dependency on six

Removed all dependency on six other than for six.moves.input

Also:
- Started removing code branches which were for Python 2 support

1 files changed, 1 insertions, 1 deletions

diff --git a/examples/environment.py b/examples/environment.py
index ca39711e..c245f55d 100755
--- a/examples/environment.py
+++ b/examples/environment.py
@@ -16,7 +16,7 @@ class EnvironmentApp(Cmd):
     def __init__(self):
         self.settable.update({'degrees_c': 'Temperature in Celsius'})
         self.settable.update({'sunny': 'Is it sunny outside?'})
-        Cmd.__init__(self)
+        super().__init__()
 
     def do_sunbathe(self, arg):
         if self.degrees_c < 20: