diff --git a/robots/little_john/telemetry/code/monitor/graph_plotter_rewrite.py b/robots/little_john/telemetry/code/monitor/graph_plotter_rewrite.py
index 6a88260..728ff3f 100755
--- a/robots/little_john/telemetry/code/monitor/graph_plotter_rewrite.py
+++ b/robots/little_john/telemetry/code/monitor/graph_plotter_rewrite.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+# Note that this should mostly work with python2, if necessary
 
 # Tool to draw live graphs of data coming in from serial port
 # Written as a telemetry tool by:
@@ -6,32 +7,31 @@
 
 # This code is incomplete, and is missing core features
 
-import pyglet
 #import math
 #import time
 #import serial
+
+import pyglet
 import numpy
 import os
 import platform
 import sys
 import easygui
 import logging
-from serialselect import selectserial
 
+from serialselect import selectserial
 from colours import *
 
-logging.basicConfig(format='%(levelname)s:\t%(message)s',
-                    level=logging.DEBUG)
+logging.basicConfig(format='%(levelname)s:\t%(message)s', level=logging.DEBUG)
 logging.info("Logging system active")
 
 datafeed = selectserial()
 
 if datafeed == None:
-    message = "Failed to open serial port"
-    logging.critical(message)
+    logging.critical("Failed to open serial port")
     sys.exit()
 
-if platform.system()=='Windows':        #easier than passing vars
+if platform.system()=='Windows':
     os='Windows'
 else:
     os='Other'
@@ -168,7 +168,7 @@ def pollSerial(elapsed):
     if os=='Windows':
         values = datafeed.readline().strip().split(b", ")
     else:
-        values = datafeed.readline().strip()#.split(', ')
+        values = datafeed.readline().strip()
         values = str(values).split(", ")
     testseries.addpoint(values)
 
diff --git a/robots/little_john/telemetry/code/monitor/serialselect.py b/robots/little_john/telemetry/code/monitor/serialselect.py
index e45b36e..63786a9 100644
--- a/robots/little_john/telemetry/code/monitor/serialselect.py
+++ b/robots/little_john/telemetry/code/monitor/serialselect.py
@@ -3,6 +3,7 @@
 # The UoN Robot Wars Project, 2018
 
 def selectserial():
+    """Cross-platform function to find appropriate serial ports, query the user if necessary, and open one of them"""
     import platform
     import serial
     import os
--
libgit2 0.21.2