update python examples for python3

examples/addons/mqttLogger.py

@@ -10,13 +10,9 @@
                            RF24NetworkFrame frame = RF24NetworkFrame(header, buf, size);
                            gw.sendUDP(mesh.getNodeID(header.from_node), frame);
 """
-import paho.mqtt.client as mqtt
-import socket
 
-try: #python 2 to 3 hack
-    unicode("")  # all strings are unicode in python3
-except NameError:
-    unicode = str  # does the same thing as python2's builtin unicode()
+import socket
+import paho.mqtt.client as mqtt
 
 ### Setup the MQTT host IP & topic to publish to
 mqttHost = "10.10.2.2"
@@ -29,7 +25,6 @@
 sock.bind(server_address)
 
 while True:
-
     data, address = sock.recvfrom(2048)
 
     print("received {} bytes from {}".format(len(data), address))
@@ -40,6 +35,6 @@
         # TODO: Sort, Display and Analyze the data
         mqttc = mqtt.Client()
         mqttc.connect(mqttHost, 1883)
-        data = unicode(data, errors="replace")
+        data = data.decode(errors="replace")
         mqttc.publish(topic, data)
         mqttc.loop(2)

examples/clients/PythonClient/pyClient.py

@@ -5,10 +5,11 @@
 Turn a light on in the evening and off in the morning according to a schedule
 """
 
-import urllib2
 from datetime import datetime
-import time
 import syslog
+import time
+from urllib.error import HTTPError, URLError
+from urllib.request import urlopen
 
 ######### Configuration #########
 
@@ -23,21 +24,19 @@
 lightState = 2
 
 while 1:
-
     # Get the current hour
     currentHour = datetime.now().hour
 
     # Check to see if the system should be off
     if (currentHour >= scheduleON or currentHour < scheduleOFF) and lightState != 1:
-
         result = 0
         # Connect to our sensor at 10.10.3.44:1000/ and request OFF
         try:
-            response = urllib2.urlopen(requestOFF, None, 15)  # 15 second time-out
+            response = urlopen(requestOFF, None, 15)  # 15 second time-out
             result = response.getcode()
-        except urllib2.HTTPError, e:
+        except HTTPError as e:
             syslog.syslog("HTTPError = " + str(e.code))
-        except urllib2.URLError, e:
+        except URLError as e:
             syslog.syslog("URLError = " + str(e.reason))
         except Exception:
             import traceback
@@ -54,11 +53,11 @@
         result = 0
 
         try:
-            response = urllib2.urlopen(requestON, None, 15)  # 15 second time-out
+            response = urlopen(requestON, None, 15)  # 15 second time-out
             result = response.getcode()
-        except urllib2.HTTPError, e:
+        except HTTPError as e:
             syslog.syslog("HTTPError = " + str(e.code))
-        except urllib2.URLError, e:
+        except URLError as e:
             syslog.syslog("URLError = " + str(e.reason))
         except Exception:
             import traceback