Uppdaterar till Python3, steg 1 av flera

cover.py

@@ -1,7 +1,7 @@
 from PIL import Image
 import ST7789 as ST7789
 import RPi.GPIO as GPIO
-import urllib2 as urllib
+import urllib3 as urllib
 import requests
 import io
 import time
@@ -27,9 +27,9 @@ uri = js2.json()['result']['uri']
 # Second request gets the url for the cover image
 js3 = {  "method": "core.library.get_images", "jsonrpc": "2.0", "params": { "uris": [uri] },  "id": 1}
 js4 = requests.post(url, json=js3)
-cover = js4.json()['result'].values()[0][0]['uri']
+cover = list(js4.json()['result'].values())[0][0]['uri']
 
-fd = urllib.urlopen(cover)
+fd = requests.urlopen(cover)
 image_file = io.BytesIO(fd.read())
 
 WIDTH = disp.width