Merge pull request #212 from dplanella/patch-4

Encoder: fix Python 3 compatibility

Author: pdp7

Adafruit_BBIO/Encoder.py

@@ -4,7 +4,7 @@
 import os
 import logging
 import itertools
-import sysfs
+from .sysfs import Node
 import platform
 
 (major, minor, patch) = platform.release().split("-")[0].split(".")
@@ -47,7 +47,7 @@ def fromdict(cls, d):
         '''Creates a class instance from a dictionary'''
 
         allowed = ('channel', 'pin_A', 'pin_B', 'sys_path')
-        df = {k: v for k, v in d.iteritems() if k in allowed}
+        df = {k: v for k, v in d.items() if k in allowed}
         return cls(**df)
 
     def __init__(self, channel, pin_A, pin_B, sys_path):
@@ -72,7 +72,7 @@ def __init__(self, channel, pin_A, pin_B, sys_path):
         self.pin_A = pin_A
         self.pin_B = pin_B
         self.sys_path = sys_path
-        self.node = sysfs.Node(sys_path)
+        self.node = Node(sys_path)
 
 
 class RotaryEncoder(object):